Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 4,642	$ 1,589
Accounts receivable:
Trade, net of allowance for credit losses of $323 and $411 respectively	92,553	96,369
Retainage	38,043	36,485
Income taxes receivable	419	419
Other current	57,153	59,492
Inventory	1,680	1,548
Contract assets	21,797	32,271
Prepaid expenses and other	7,254	7,229
Total current assets	223,541	235,402
Property and equipment, net of depreciation	120,879	125,497
Operating lease right-of-use assets, net of amortization	17,480	18,874
Financing lease right-of-use assets, net of amortization	12,097	12,858
Inventory, non-current	6,249	6,455
Intangible assets, net of amortization	9,697	10,077
Deferred income tax asset	41	70
Other non-current	4,871	4,956
Total assets	394,855	414,189
Current liabilities:
Current debt, net of debt issuance costs	4,348	4,344
Accounts payable:
Trade	38,242	48,252
Retainage	990	716
Accrued liabilities	77,701	84,637
Income taxes payable	776	639
Contract liabilities	33,150	33,135
Current portion of operating lease liabilities	4,777	4,989
Current portion of financing lease liabilities	2,878	3,901
Total current liabilities	162,862	180,613
Long-term debt, net of debt issuance costs	23,603	29,523
Operating lease liabilities	13,512	14,537
Financing lease liabilities	8,680	8,376
Other long-term liabilities	23,513	19,837
Deferred income tax liability	228	207
Interest rate swap liability	1,372	1,602
Total liabilities	233,770	254,695
Stockholders' equity:
Preferred stock -- $0.01 par value, 10,000,000 authorized, none issued
Common stock -- $0.01 par value, 50,000,000 authorized, 31,188,886 and 31,171,804 issued; 30,477,655 and 30,460,573 outstanding at March 31, 2021 and December 31, 2020, respectively	312	312
Treasury stock, 711,231 shares, at cost, as of March 31, 2021 and December 31, 2020, respectively	(6,540)	(6,540)
Accumulated other comprehensive loss	(1,372)	(1,602)
Additional paid-in capital	184,757	184,324
Retained loss	(16,072)	(17,000)
Total stockholders' equity	161,085	159,494
Total liabilities and stockholders' equity	$ 394,855	$ 414,189