Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 5,303	$ 21,829
Trade and other receivables, less allowance for doubtful accounts of $389 and $515	24,245	25,555
Costs and estimated earnings in excess of billings on uncompleted contracts	50,293	43,663
Inventories	18,998	18,645
Prepaid expenses and other	1,013	2,096
Assets held for sale	36,439	36,822
Total current assets	136,291	148,610
Property and equipment, less accumulated depreciation and amortization of $73,369 and $69,477	79,043	81,671
Other assets	10,591	11,274
Total assets	225,925	241,555
Current liabilities:
Accounts payable	3,699	5,267
Accrued liabilities	7,787	10,925
Billings in excess of costs and estimated earnings on uncompleted contracts	291	2,038
Current portion of capital lease obligations	244	325
Total current liabilities	12,021	18,555
Capital lease obligations, less current portion	424	602
Deferred income taxes	82	1,282
Other long-term liabilities	10,956	11,903
Total liabilities	23,483	32,342
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $.01 par value, 10,000,000 shares authorized, none issued or outstanding
Common stock, $.01 par value, 15,000,000 shares authorized, 9,619,755 and 9,601,011 shares issued and outstanding	96	96
Additional paid-in-capital	119,619	118,680
Retained earnings	83,915	91,920
Accumulated other comprehensive loss	(1,188)	(1,483)
Total stockholders’ equity	202,442	209,213
Total liabilities and stockholders’ equity	$ 225,925	$ 241,555

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).