XML 37 R24.htm IDEA: XBRL DOCUMENT

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2020

The estimated useful lives and residual values of the Company’s rental equipment used for financial reporting purposes are as follows:

Relocatable modular buildings		18 years, 50% residual value
Relocatable modular accessories		3 to 18 years, no residual value
Blast resistant modules		20 years, no residual value
Portable storage containers		25 years, 62.5% residual value
Electronic test equipment and accessories		1 to 8 years, no residual value
Liquid and solid containment tanks and boxes and accessories		3 to 20 years, no residual value

Property, plant and equipment consist of the following:

(dollar amounts in thousands)	Estimated useful life		December 31,
	in years		2020			2019
Land	Indefinite		$	54,429		$	54,423
Land improvements	20 – 50			59,249			52,325
Buildings		30		32,306			29,848
Furniture, office equipment and software	3 – 10			36,882			36,610
Vehicles and machinery	5 – 25			43,101			41,877
				225,967			215,083
Less accumulated depreciation				(91,514	)		(84,308	)
				134,453			130,775
Construction in progress				1,757			272
			$	136,210		$	131,047

The table below presents the weighted-average common stock used to calculate basic and diluted earnings per share:

(in thousands)	Year Ended December 31,
	2020		2019		2018
Weighted-average common stock for calculating basic earnings per share		24,157		24,250		24,141
Effect of potentially dilutive securities from equity-based compensation		374		373		399
Weighted-average common stock for calculating diluted earnings per share		24,531		24,623		24,540

The allowance for doubtful accounts activity was as follows:

(in thousands)	2020			2019
Beginning balance, January 1	$	1,883		$	1,883
Provision for doubtful accounts		1,343			1,013
Write-offs, net of recoveries		(1,126	)		(1,013	)
Ending balance, December 31	$	2,100		$	1,883