Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 10,343	$ 128
Restricted cash	0	958
Accounts receivable:
Trade, net of allowance for credit losses of $3,011 and $2,600, respectively	96,146	116,540
Retainage	37,963	42,547
Income taxes receivable	1,059	962
Other current	2,260	2,680
Inventory	1,963	1,114
Costs and estimated earnings in excess of billings on uncompleted contracts	36,339	41,389
Prepaid expenses and other	5,354	5,647
Total current assets	191,427	211,965
Property and equipment, net of depreciation	126,971	132,348
Operating lease right-of-use assets, net of amortization	16,762	17,997
Financing lease right-of-use assets, net of amortization	13,783	7,896
Inventory, non-current	6,360	7,037
Intangible assets, net of amortization	11,114	12,147
Deferred income tax asset	143	85
Other non-current	4,861	5,369
Total assets	371,421	394,844
Current liabilities:
Current debt, net of debt issuance costs	4,358	3,668
Accounts payable:
Trade	46,869	70,421
Retainage	434	562
Accrued liabilities	20,731	16,966
Income taxes payable	1,227	1,523
Billings in excess of costs and estimated earnings on uncompleted contracts	53,829	48,781
Current portion of operating lease liabilities	5,095	5,043
Current portion of financing lease liabilities	4,919	2,788
Total current liabilities	137,462	149,752
Long-term debt, net of debt issuance costs	47,734	68,029
Operating lease liabilities	12,334	13,596
Financing lease liabilities	8,288	3,760
Other long-term liabilities	20,017	20,436
Deferred income tax liability	164	205
Interest rate swap liability	1,989	1,045
Total liabilities	227,988	256,823
Stockholders? equity:
Preferred stock -- $0.01 par value, 10,000,000 authorized, none issued
Common stock -- $0.01 par value, 50,000,000 authorized, 31,060,101 and 30,303,395 issued; 30,348,870 and 29,592,164 outstanding at June 30, 2020 and December 31, 2019, respectively	311	303
Treasury stock, 711,231 shares, at cost, as of June 30, 2020 and December 31, 2019, respectively	(6,540)	(6,540)
Accumulated other comprehensive loss	(1,989)	(1,045)
Additional paid-in capital	184,120	182,523
Retained loss	(32,469)	(37,220)
Total stockholders' equity	143,433	138,021
Total liabilities and stockholders' equity	$ 371,421	$ 394,844