CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 17,547	$ 62,623
Accounts receivable, net of allowances of $1,001 and $947, respectively	137,003	107,172
Costs and estimated earnings in excess of billings on uncompleted contracts	50,246	29,299
Construction materials inventory	2,754
Deferred income tax assets	10,569	10,544
Receivable for insurance claims in excess of deductibles	9,136	8,422
Refundable income taxes	2,136	2,144
Other current assets	1,561	3,719
Total current assets	230,952	223,923
Property and equipment, net of accumulated depreciation of $59,335 and $46,878, respectively	115,088	96,591
Goodwill	46,599	46,599
Intangible assets, net of accumulated amortization of $2,139 and $1,888, respectively	10,953	11,204
Other assets	1,368	1,831
Total assets	404,960	380,148
Current liabilities:
Short-term borrowings	10,000
Current maturities of long-term debt	10,000
Accounts payable	60,907	41,309
Billings in excess of costs and estimated earnings on uncompleted contracts	38,939	45,505
Accrued self insurance	37,843	34,044
Other current liabilities	20,006	17,974
Total current liabilities	177,695	138,832
Long-term debt, net of current maturities		30,000
Deferred income tax liabilities	17,420	17,971
Other liabilities	591	636
Total liabilities	195,706	187,439
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, 2011 and December 31, 2010
Common stock-$0.01 par value per share; 100,000,000 authorized shares; 20,405,044 and 20,007,081 shares issued and 20,401,734 and 20,007,081 outstanding at September 30, 2011 and December 31, 2010, respectively	204	200
Additional paid-in capital	149,332	145,149
Retained earnings	59,798	47,360
Treasury stock-3,310 and 0 shares, respectively	(80)
Total stockholders' equity	209,254	192,709
Total liabilities and stockholders' equity	$ 404,960	$ 380,148