Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 893	$ 1,589
Accounts receivable:
Trade, net of allowance for credit losses of $323 and $411, at September 30, 2021 and December 31, 2020, respectively	83,984	96,369
Retainage	39,176	36,485
Income taxes receivable	483	419
Other current	66,041	59,492
Inventory	1,311	1,548
Contract assets	17,670	32,271
Prepaid expenses and other	5,498	7,229
Total current assets	215,056	235,402
Property and equipment, net of depreciation	106,685	125,497
Operating lease right-of-use assets, net of amortization	15,193	18,874
Financing lease right-of-use assets, net of amortization	12,135	12,858
Inventory, non-current	5,628	6,455
Intangible assets, net of amortization	8,936	10,077
Deferred income tax asset	41	70
Other non-current	4,681	4,956
Total assets	368,355	414,189
Current liabilities:
Current debt, net of debt issuance costs	19,139	4,344
Accounts payable:
Trade	31,163	48,252
Retainage	762	716
Accrued liabilities	83,419	84,637
Income taxes payable	332	639
Contract liabilities	25,631	33,135
Current portion of operating lease liabilities	3,970	4,989
Current portion of financing lease liabilities	1,408	3,901
Total current liabilities	165,824	180,613
Long-term debt, net of debt issuance costs	295	29,523
Operating lease liabilities	12,033	14,537
Financing lease liabilities	10,324	8,376
Other long-term liabilities	23,007	19,837
Deferred income tax liability	198	207
Interest rate swap liability		1,602
Total liabilities	211,681	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, 31,779,706 and 31,171,804 issued; 31,068,475 and 30,460,573 outstanding at September 30, 2021 and December 31, 2020, respectively	318	312
Treasury stock, 711,231 shares, at cost, as of September 30, 2021 and December 31, 2020, respectively	(6,540)	(6,540)
Accumulated other comprehensive loss		(1,602)
Additional paid-in capital	185,633	184,324
Retained loss	(22,737)	(17,000)
Total stockholders' equity	156,674	159,494
Total liabilities and stockholders' equity	$ 368,355	$ 414,189