Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 9,201	$ 9,086
Accounts receivable:
Trade, net of allowance of $0 and $0, respectively	72,714	84,953
Retainage	39,568	39,189
Other current	4,612	3,706
Income taxes receivable	388	339
Inventory	3,719	4,386
Costs and estimated earnings in excess of billings on uncompleted contracts	42,706	46,006
Prepaid expenses and other	6,408	4,124
Total current assets	179,316	191,789
Property and equipment, net	144,868	146,278
Inventory, non-current	4,894	4,915
Goodwill	69,483	69,483
Intangible assets, net of amortization	17,328	18,175
Other non-current	6,544	2,645
Total assets	422,433	433,285
Current liabilities:
Current debt, net of debt issuance costs	17,931	22,756
Accounts payable:
Trade	36,130	45,194
Retainage	2,369	1,990
Accrued liabilities	15,642	17,873
Taxes payable	238	256
Billings in excess of costs and estimated earnings on uncompleted contracts	35,769	33,923
Total current liabilities	108,079	121,992
Long-term debt, net of debt issuance costs	59,972	63,185
Other long-term liabilities	3,521	3,573
Deferred income taxes	14,361	13,243
Interest rate swap liability	0	26
Total liabilities	185,933	202,019
Commitments and contingencies
Stockholders’ equity:
Preferred stock -- $0.01 par value, 10,000,000 authorized, none issued	0	0
Common stock -- $0.01 par value, 50,000,000 authorized, 29,007,726 and 28,860,961 issued; 28,296,502 and 28,149,737 outstanding at March 31, 2018 and December 31, 2017, respectively	290	288
Treasury stock, 711,231 shares, at cost, as of March 31, 2018 and December 31, 2017, respectively	(6,540)	(6,540)
Other comprehensive income (loss)	243	(26)
Additional paid-in capital	175,845	174,697
Retained earnings	66,662	62,847
Total stockholders’ equity	236,500	231,266
Total liabilities and stockholders’ equity	$ 422,433	$ 433,285