Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 6,726	$ 12,293
Accounts receivable:
Trade, net of allowance for credit losses of $323 and $323, respectively	99,780	88,173
Retainage	43,467	41,379
Income taxes receivable	405	405
Other current	3,713	17,585
Inventory	1,467	1,428
Contract assets	24,474	28,529
Prepaid expenses and other	6,008	8,142
Total current assets	186,040	197,934
Property and equipment, net	104,974	106,654
Operating lease right-of-use assets, net of amortization	15,006	14,686
Financing lease right-of-use assets, net of amortization	17,472	14,561
Inventory, non-current	5,568	5,418
Intangible assets, net of amortization	8,246	8,556
Deferred income tax asset	40	41
Other non-current	3,530	3,900
Total assets	340,876	351,750
Current liabilities:
Current debt, net of debt issuance costs	27,210	39,141
Accounts payable:
Trade	60,537	48,217
Retainage	1,186	923
Accrued liabilities	21,141	38,594
Income taxes payable	1,977	601
Contract liabilities	32,593	26,998
Current portion of operating lease liabilities	4,005	3,857
Current portion of financing lease liabilities	4,670	3,406
Total current liabilities	153,319	161,737
Long-term debt, net of debt issuance costs	929	259
Operating lease liabilities	11,709	11,637
Financing lease liabilities	12,605	10,908
Other long-term liabilities	18,530	18,942
Deferred income tax liability	187	169
Total liabilities	197,279	203,652
Stockholders' equity:
Preferred stock -- $0.01 par value, 10,000,000 authorized, none issued
Common stock -- $0.01 par value, 50,000,000 authorized, 31,676,725 and 31,712,457 issued; 30,965,494 and 31,001,226 outstanding at March 31, 2022 and December 31, 2021, respectively	317	317
Treasury stock, 711,231 shares, at cost, as of March 31, 2022 and December 31, 2021, respectively	(6,540)	(6,540)
Additional paid-in capital	186,236	185,881
Retained loss	(36,416)	(31,560)
Total stockholders' equity	143,597	148,098
Total liabilities and stockholders' equity	$ 340,876	$ 351,750