Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Assets
Cash	$ 1,496	$ 1,508
Accounts receivable, net of allowance for doubtful accounts of $1,883 in 2019 and 2018	121,018	121,016
Rental equipment, at cost:
Relocatable modular buildings	854,076	817,375
Electronic test equipment	307,639	285,052
Liquid and solid containment tanks and boxes	315,571	313,573
Rental equipment, gross	1,477,286	1,416,000
Less accumulated depreciation	(534,134)	(514,985)
Rental equipment, net	943,152	901,015
Property, plant and equipment, net	126,906	126,899
Prepaid expenses and other assets	53,062	31,816
Intangible assets, net	6,807	7,254
Goodwill	27,808	27,808
Total assets	1,280,249	1,217,316
Liabilities:
Notes payable	301,878	298,564
Accounts payable and accrued liabilities	109,443	90,844
Deferred income	66,618	49,709
Deferred income taxes, net	210,001	206,664
Total liabilities	687,940	645,781
Shareholders’ equity:
Common stock, no par value - Authorized 40,000 shares Issued and outstanding - 24,253 shares as of June 30, 2019 and 24,182 shares as of December 31, 2018	104,984	103,801
Retained earnings	487,407	467,783
Accumulated other comprehensive loss	(82)	(49)
Total shareholders’ equity	592,309	571,535
Total liabilities and shareholders’ equity	$ 1,280,249	$ 1,217,316