CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 31,367	$ 36,569
Contracts receivable, net	64,476	98,579
Contract retainage	117	111
Costs and estimated earnings in excess of billings on uncompleted contracts	17,564	24,727
Prepaid expenses and other	4,116	4,862
Inventory	10,787	11,329
Deferred tax assets	3,695	9,927
Income tax receivable	1,559	1,365
Assets held for sale	13,527	14,527
Total current assets	147,208	201,996
Property, plant and equipment, net	231,930	223,555
Other assets	676	683
Total assets	379,814	426,234
Current liabilities:
Accounts payable	32,623	66,054
Billings in excess of costs and estimated earnings on uncompleted contracts	19,561	35,006
Accrued employee costs	7,281	7,516
Accrued expenses	3,107	3,699
Total current liabilities	62,572	112,275
Deferred tax liabilities	36,211	38,397
Total liabilities	98,783	150,672
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, 14,504,978 issued and outstanding at June 30, 2014 and 14,493,748 at December 31, 2013, respectively	10,067	10,012
Additional paid-in capital	93,625	93,125
Retained earnings	177,339	172,425
Total shareholders' equity	281,031	275,562
Total liabilities and shareholders' equity	$ 379,814	$ 426,234