CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 584	$ 39,797
Accounts receivable, net of allowances of $362 and $376, respectively	185,454	187,235
Costs and estimated earnings in excess of billings on uncompleted contracts	80,305	51,486
Receivable for insurance claims in excess of deductibles	12,930	11,290
Refundable income taxes	1,296	5,617
Other current assets	5,383	7,942
Total current assets	285,952	303,367
Property and equipment, net of accumulated depreciation of $203,786 and $181,575, respectively	153,009	160,678
Goodwill	46,781	47,124
Intangible assets, net of accumulated amortization of $4,489 and $3,798, respectively	11,017	11,362
Other assets	2,850	2,394
Total assets	499,609	524,925
Current liabilities:
Current maturities of long-term debt, including capital leases	1,062	0
Accounts payable	85,867	73,300
Billings in excess of costs and estimated earnings on uncompleted contracts	46,052	40,614
Accrued self insurance	37,267	36,967
Other current liabilities	28,101	28,856
Total current liabilities	198,349	179,737
Deferred income tax liabilities	14,242	14,382
Long-term debt, including capital leases, net of current maturities	37,500	0
Other liabilities	845	926
Total liabilities	250,936	195,045
Commitments and contingencies
Stockholders' equity:
Preferred stock—$0.01 par value per share; 4,000,000 authorized shares; none issued and outstanding at September 30, 2016 and December 31, 2015	0	0
Common stock—$0.01 par value per share; 100,000,000 authorized shares; 16,064,682 and 19,969,347 shares issued and outstanding at September 30, 2016 and December 31, 2015, respectively	158	198
Additional paid-in capital	132,917	161,342
Accumulated other comprehensive income	51	116
Retained earnings	115,547	168,224
Total stockholders' equity	248,673	329,880
Total liabilities and stockholders' equity	$ 499,609	$ 524,925