Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash	$ 342	$ 2,342
Accounts receivable, net of allowance for doubtful accounts of $2,200 in 2020 and $1,883 in 2019	125,834	128,099
Rental equipment, at cost:
Relocatable modular buildings	883,076	868,807
Electronic test equipment	341,841	335,343
Liquid and solid containment tanks and boxes	315,581	316,261
Rental equipment, gross	1,540,498	1,520,411
Less accumulated depreciation	(564,789)	(552,911)
Rental equipment, net	975,709	967,500
Property, plant and equipment, net	132,075	131,047
Prepaid expenses and other assets	44,993	45,356
Intangible assets, net	7,279	7,334
Goodwill	28,197	28,197
Total assets	1,314,429	1,309,875
Liabilities:
Notes payable	291,544	293,431
Accounts payable and accrued liabilities	104,005	109,174
Deferred income	61,907	54,964
Deferred income taxes, net	219,369	218,270
Total liabilities	676,825	675,839
Shareholders’ equity:
Common stock, no par value - Authorized 40,000 shares Issued and outstanding - 24,182 shares as of March 31, 2020 and 24,296 shares as of December 31, 2019	106,957	106,360
Retained earnings	530,559	527,746
Accumulated other comprehensive loss	88	(70)
Total shareholders’ equity	637,604	634,036
Total liabilities and shareholders’ equity	$ 1,314,429	$ 1,309,875