CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 64,609	$ 76,454
Accounts receivable, net of allowances of $1,192 and $1,132, respectively	160,406	173,468
Costs and estimated earnings in excess of billings on uncompleted contracts	61,378	40,519
Deferred income tax assets	13,143	14,550
Receivable for insurance claims in excess of deductibles	11,873	11,389
Refundable income taxes	2,629	1,286
Other current assets	2,683	6,283
Total current assets	316,721	323,949
Property and equipment, net of accumulated depreciation of $139,604 and $115,679, respectively	153,968	142,931
Goodwill	46,599	46,599
Intangible assets, net of accumulated amortization of $3,143 and $2,893, respectively	9,949	10,199
Other assets	1,462	1,744
Total assets	528,699	525,422
Current liabilities:
Accounts payable	68,150	79,605
Billings in excess of costs and estimated earnings on uncompleted contracts	48,468	52,952
Accrued self insurance	39,419	39,111
Other current liabilities	36,558	32,711
Total current liabilities	192,595	204,379
Deferred income tax liabilities	23,719	23,719
Other liabilities	1,074	1,233
Total liabilities	217,388	229,331
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, 2014 and December 31, 2013	0	0
Common stock—$0.01 par value per share; 100,000,000 authorized shares; 20,958,619 and 21,223,076 shares issued and outstanding at September 30, 2014 and December 31, 2013, respectively	207	210
Additional paid-in capital	154,008	161,202
Retained earnings	157,096	134,679
Total stockholders’ equity	311,311	296,091
Total liabilities and stockholders’ equity	$ 528,699	$ 525,422