View Filing Data

$ 107,200

$ 304,200

84,613

$ 70,735

173,562

$ 143,147

423,009

365,215

Leasing [Member]

Non-lease Rental Related Services [Member]

107,215

94,184

304,154

267,744

16,039

13,120

38,369

30,716

Non-lease Sales [Member]

49,791

35,364

78,877

65,333

Non-lease Other [Member]

Non-lease Revenues [Member]

517

479

1,609

1,422

66,347

48,963

118,855

97,471

Mobile Modular [Member]

32,434

31,667

Mobile Modular [Member] | Leasing [Member]

86,302

74,891

219,116

188,613

Mobile Modular [Member] | Non-lease Rental Related Services [Member]

61,519

52,036

171,995

146,672

Mobile Modular [Member] | Non-lease Sales [Member]

8,105

5,697

15,651

11,226

Mobile Modular [Member] | Non-lease Other [Member]

16,676

17,140

31,401

30,694

Mobile Modular [Member] | Non-lease Revenues [Member]

24,783

22,855

47,121

41,941

TRS-RenTelco [Member]

18,601

18,321

TRS-RenTelco [Member] | Leasing [Member]

34,090

28,137

97,076

86,527

TRS-RenTelco [Member] | Non-lease Rental Related Services [Member]

28,284

23,206

79,450

69,183

TRS-RenTelco [Member] | Non-lease Sales [Member]

717

642

1,958

1,816

TRS-RenTelco [Member] | Non-lease Other [Member]

4,614

3,828

14,235

14,179

TRS-RenTelco [Member] | Non-lease Revenues [Member]

475

461

1,433

1,349

5,806

4,931

17,626

17,344

Adler Tanks [Member]

1,340

916

Adler Tanks [Member] | Leasing [Member]

24,809

26,017

74,579

70,244

Adler Tanks [Member] | Non-lease Rental Related Services [Member]

17,412

18,942

52,709

51,889

Adler Tanks [Member] | Non-lease Sales [Member]

7,217

6,781

20,760

17,674

Adler Tanks [Member] | Non-lease Other [Member]

140

294

1,003

629

Adler Tanks [Member] | Non-lease Revenues [Member]

107

7,397

7,075

21,870

18,355

Enviroplex [Member]

^[1]

32,238

19,831

Enviroplex [Member] | Non-lease Sales [Member]

28,361

14,102

32,238

^[1]

19,831

^[1]

Enviroplex [Member] | Non-lease Revenues [Member]

28,361

14,102

32,238

19,831

$ 28,361

$ 14,102

$ 32,238

$ 19,831

[1]

Implemented Accounting Pronouncements - Additional Information (Detail)	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Lessee, operating lease, description		The Company leases real estate for certain of its branch offices and rental equipment storage yards, vehicles and equipment used in its rental operations. The Company determines if an arrangement is a lease at inception. The Company has leases with lease and non-lease components, which are accounted for separately.
Lessee, operating lease, option to extend		true
Lessee, operating lease, option to extend, description		These leases include one or more options to renew, with renewal terms that may extend the lease term from one to three years.
Operating lease, right of use assets	$ 10,300,000	$ 10,300,000
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PrepaidExpenseAndOtherAssets	us-gaap:PrepaidExpenseAndOtherAssets
Operating lease liabilities	$ 10,262,000	$ 10,262,000
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent	us-gaap:AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent
Operating lease expense	$ 1,000,000.0	$ 2,800,000
Short term lease expense	$ 100,000	$ 200,000
Weighted-average remaining lease term for operating leases	4 years	4 years
Weighted-average discount rate for operating leases	4.46%	4.46%
Sub-lease income	$ 0	$ 0
Finance lease liability	0	$ 0
Lessor, operating lease, description		The Company’s equipment rentals for each of its operating segments are governed by agreements that detail the lease terms and conditions. The determination of whether these contracts with customers contain a lease generally does not require significant judgement. The Company accounts for these rentals as operating leases.
Lessor, operating lease, option to extend		true
Lessor, operating lease, option to extend description		Initial lease terms vary in length based upon customer needs and generally range from one to sixty months.
Lease revenue	107,200,000	$ 304,200,000
Operating lease revenue	106,000,000.0	301,400,000
Finance lease revenue	$ 1,200,000	2,800,000
Finance lease revenue, sales revenue		2,600,000
Finance lease revenue, interest income		$ 200,000
Minimum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Lessee, operating lease, renewal term	1 year	1 year
Lessor, operating lease, renewal term	1 month	1 month
Lessor, operating lease, rental products, useful lives		3 years
Maximum [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Lessee, operating lease, renewal term	3 years	3 years
Lessor, operating lease, renewal term	60 months	60 months
Lessor, operating lease, rental products, useful lives		5 years

Implemented Accounting Pronouncements - Summary of Supplemental Cash flow Information Related to Leases (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 2,652
Right of use assets obtained in exchange for lease obligations:
Operating leases	$ 2,393

Implemented Accounting Pronouncements - Summary of Maturities of Operating Lease Liabilities (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Operating Lease Liabilities Payments Due [Abstract]
2019	$ 896
2020	3,195
2021	2,630
2022	1,867
2023	1,383
Thereafter	1,208
Total lease payments	11,179
Less imputed interest	(917)
Operating lease liabilities	$ 10,262

Implemented Accounting Pronouncements - Summary of Maturities of Operating Lease Payments (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Lessor Operating Lease Payments Fiscal Year Maturity [Abstract]
2019	$ 35,911
2020	73,282
2021	25,719
2022	7,124
2023	1,861
Thereafter	767
Operating lease, payments to be received	$ 144,664

Implemented Accounting Pronouncements - Minimum Lease Payments Receivable and Net Investment Included in Accounts Receivable for Leases (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Minimum lease payments receivable and net investment included in accounts receivable for leases
Gross minimum lease payments receivable	$ 3,805
Less – unearned interest	(352)
Net investment in finance lease receivables	$ 3,453

Implemented Accounting Pronouncements - Future Minimum Lease Payments under Non-Cancelable Finance Leases (Detail) $ in Thousands	Sep. 30, 2019 USD ($)
Future minimum lease payments under non-cancelable finance leases
2019	$ 1,039
2020	1,913
2021	607
2022	187
2023	50
Thereafter	9
Total minimum future lease payments	$ 3,805

Earnings Per Share - Weighted-Average Number of Shares of Common Stock Used to Calculate Basic and Diluted Earnings Per Share (Detail) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Weighted-average number of shares of common stock for calculating basic earnings per share	24,268	24,172	24,237	24,128
Effect of potentially dilutive securities from equity-based compensation	364	391	355	422
Weighted-average number of shares of common stock for calculating diluted earnings per share	24,632	24,563	24,592	24,550

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Anti-dilutive securities excluded from computation of diluted earnings per share	0	0	0	0

Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]
Trade name	$ 5,871	$ 5,871
Customer relationships	10,644	9,849
Non-compete agreements	194
Intangible Assets, gross	16,709	15,720
Less accumulated amortization	(9,155)	(8,466)
Intangible Assets, net	$ 7,554	$ 7,254
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life in years	11 years
Non-compete Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life in years	5 years

Intangible Assets - Additional Information (Detail) - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Goodwill And Intangible Assets Disclosure [Abstract]
Impairment charge		$ 0
Subsequent impairment of the underlying assets	$ 0
Expected annual amortization expense for 2019	100,000
Expected annual amortization expense for 2020	100,000
Expected annual amortization expense for 2021	100,000
Expected annual amortization expense for 2022	100,000
Expected annual amortization expense for 2023	100,000
Expected annual amortization expense for 2024	100,000
Expected annual amortization expense for 2025	$ 100,000

Acquisition - Additional Information (Detail) - USD ($) $ in Thousands	Aug. 15, 2019	Sep. 30, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill		$ 28,125	$ 27,808
ATP Containers LLC, dba TuffBox Container (“TuffBox”) [Member]
Business Acquisition [Line Items]
Total purchase price	$ 7,800
Intangible assets	1,300
Accounts payable and accrued liabilities acquired		$ 400
Goodwill	300
ATP Containers LLC, dba TuffBox Container (“TuffBox”) [Member] \| Rental Equipment [Member]
Business Acquisition [Line Items]
Assets acquired	$ 5,500

Segment Reporting - Additional Information (Detail)	9 Months Ended
Segment Reporting - Additional Information (Detail)	Sep. 30, 2019 Segment Customer	Sep. 30, 2018 Customer
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	4
Customer Concentration Risk [Member] \| Sales [Member]
Segment Reporting Information [Line Items]
Number of major customer \| Customer	0	0
Geographic Concentration Risk [Member] \| Sales [Member] \| Foreign Country Customers [Member]
Segment Reporting Information [Line Items]
Revenues from customers	3.00%	4.00%

Segment Reporting - Summarized Financial Information for Company's Reportable Segments (Detail) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Sep. 30, 2019

Sep. 30, 2018

Sep. 30, 2019

Sep. 30, 2018

Dec. 31, 2018

$ 90,857

$ 82,155

$ 261,658

$ 233,683

30,816

23,880

76,738

60,797

84,613

70,735

173,562

143,147

423,009

365,215

20,535

18,407

59,222

54,287

78,282

64,050

195,168

168,148

31,534

28,226

92,044

85,833

46,748

35,824

103,124

82,315

(9,407)

(9,133)

43,455

32,553

93,671

72,677

132,493

95,635

138,114

115,089

138,114

115,089

$ 121,016

1,502,769

1,398,263

1,502,769

1,398,263

1,416,000

958,610

888,607

958,610

888,607

$ 901,015

Mobile Modular [Member]

133,736

116,436

52,946

40,510

32,434

31,667

86,302

74,891

219,116

188,613

16,449

15,841

102,029

86,515

48,013

43,191

54,016

43,324

(5,948)

(5,256)

48,068

38,068

62,084

40,704

88,893

69,419

88,893

69,419

865,254

801,129

865,254

801,129

607,949

558,790

$ 607,949

$ 558,790

Utilization (period end)

^[1]

79.50%

79.20%

Average utilization

^[1]

79.10%

77.80%

TRS-RenTelco [Member]

$ 76,050

$ 65,919

2,425

2,287

18,601

18,321

34,090

28,137

97,076

86,527

30,533

26,536

44,673

40,155

18,101

16,780

26,572

23,375

(1,662)

(1,999)

24,864

20,871

66,525

51,744

22,515

18,991

22,515

18,991

321,677

284,647

321,677

284,647

162,196

129,816

$ 162,196

$ 129,816

Utilization (period end)

^[1]

67.10%

61.50%

Average utilization

^[1]

66.00%

62.40%

Adler Tanks [Member]

$ 51,872

$ 51,328

21,367

18,000

1,340

916

24,809

26,017

74,579

70,244

12,240

11,910

36,380

35,031

22,054

22,245

14,326

12,786

(2,598)

(2,409)

11,728

10,377

3,884

3,187

19,382

19,876

19,382

19,876

315,838

312,487

315,838

312,487

188,465

200,001

$ 188,465

$ 200,001

Utilization (period end)

^[1]

51.00%

64.00%

Average utilization

^[1]

56.20%

59.80%

Enviroplex [Member]

^[2]

$ 32,238

$ 19,831

28,361

14,102

32,238

^[2]

19,831

^[2]

^[2]

12,086

6,447

^[2]

3,876

3,617

^[2]

8,210

2,830

^[2]

801

531

^[2]

9,011

3,361