CONSOLIDATED BALANCE SHEETS (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 61,192	$ 88,072
Contracts receivable, net	54,355	13,042
Contract retainage	4,712	11,000
Costs and estimated earnings in excess of billings on uncompleted contracts	20,280	6,513
Prepaid expenses	2,340	3,674
Inventory	5,874	4,265
Deferred tax assets	6,083	1,301
Income tax receivable	3,123	2,755
Total current assets	157,959	130,622
Property, plant and equipment, net	214,063	197,652
Long-term contracts receivable, net	2,455
Other receivables		5,907
Other assets	674	675
Total assets	375,151	334,856
Current liabilities:
Accounts payable	17,484	5,262
Billings in excess of costs and estimated earnings on uncompleted contracts	36,785	7,215
Accrued employee costs	3,917	4,506
Accrued expenses	3,806	1,528
Total current liabilities	61,992	18,511
Deferred tax liabilities	31,410	29,153
Total liabilities	93,402	47,664
Shareholders' equity:
Preferred stock, no par value, 5,000,000 shares authorized, no shares issued and outstanding
Common stock, no par value, 20,000,000 shares authorized, 14,352,380 and 14,340,971 shares issued and outstanding at September 30, 2011 and December 31, 2010, respectively	9,917	9,846
Additional paid-in capital	91,781	91,112
Retained earnings	180,051	186,234
Total shareholders' equity	281,749	287,192
Total liabilities and shareholders' equity	$ 375,151	$ 334,856