Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 50,213	$ 38,979
Accounts receivable:
Trade, net of allowance of $0	31,428	20,954
Retainage	7,701	5,977
Other	1,078	1,111
Income taxes receivable	2,651	13,998
Note receivable	46	51
Inventory	3,558	3,361
Deferred tax asset	1,190	1,182
Costs and estimated earnings in excess of billings on uncompleted contracts	12,207	15,112
Prepaid expenses and other	1,632	2,470
Total current assets	111,704	103,195
Property and equipment, net	152,220	146,107
Accounts receivable, long-term	1,410	1,410
Goodwill	32,168	32,168
Other assets	230	207
Total assets	297,732	283,087
Current liabilities:
Current debt	10,511	0
Accounts payable:
Trade	17,283	11,977
Retainage	2,154	374
Accrued liabilities	10,449	9,339
Billings in excess of costs and estimated earnings on uncompleted contracts	16,711	5,665
Total current liabilities	57,108	27,355
Other long-term liabilities	489	606
Deferred income taxes	17,143	21,287
Deferred revenue	160	203
Total liabilities	74,900	49,451
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, 27,472,662 and 27,436,922 issued; 27,154,930 and 27,119,191 outstanding at September 30, 2012 and December 31, 2011, respectively	275	274
Treasury stock, 317,731 shares, at cost	(3,003)	(3,003)
Additional paid-in capital	160,107	157,560
Retained earnings	65,453	78,805
Total stockholders' equity	222,832	233,636
Total liabilities and stockholders’ equity	$ 297,732	$ 283,087