Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,410	$ 1,589
Accounts receivable:
Trade, net of allowance for credit losses of $323 and $411 respectively	89,671	96,369
Retainage	38,388	36,485
Income taxes receivable	1,101	419
Other current	66,967	59,492
Inventory	2,102	1,548
Contract assets	23,112	32,271
Prepaid expenses and other	6,973	7,229
Total current assets	230,724	235,402
Property and equipment, net of depreciation	104,917	125,497
Operating lease right-of-use assets, net of amortization	16,204	18,874
Financing lease right-of-use assets, net of amortization	12,289	12,858
Inventory, non-current	4,839	6,455
Intangible assets, net of amortization	9,316	10,077
Deferred income tax asset	41	70
Other non-current	4,875	4,956
Total assets	383,205	414,189
Current liabilities:
Current debt, net of debt issuance costs	6,139	4,344
Accounts payable:
Trade	44,189	48,252
Retainage	984	716
Accrued liabilities	83,638	84,637
Income taxes payable	101	639
Contract liabilities	28,363	33,135
Current portion of operating lease liabilities	4,395	4,989
Current portion of financing lease liabilities	2,085	3,901
Total current liabilities	169,894	180,613
Long-term debt, net of debt issuance costs	294	29,523
Operating lease liabilities	12,687	14,537
Financing lease liabilities	9,890	8,376
Other long-term liabilities	23,316	19,837
Deferred income tax liability	97	207
Interest rate swap liability		1,602
Total liabilities	216,178	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, 31,617,998 and 31,171,804 issued; 30,906,767 and 30,460,573 outstanding at June 30, 2021 and December 31, 2020, respectively	316	312
Treasury stock, 711,231 shares, at cost, as of June 30, 2021 and December 31, 2020, respectively	(6,540)	(6,540)
Accumulated other comprehensive loss		(1,602)
Additional paid-in capital	185,793	184,324
Retained loss	(12,542)	(17,000)
Total stockholders' equity	167,027	159,494
Total liabilities and stockholders' equity	$ 383,205	$ 414,189