Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 11,805	$ 10,309
Trade and other receivables, less allowance for doubtful accounts of $459 and $751	22,615	27,567
Costs and estimated earnings in excess of billings on uncompleted contracts	46,063	42,592
Inventories	20,606	29,475
Refundable income taxes	341	3,413
Assets held for sale	6,075
Prepaid expenses and other	962	1,923
Total current assets	108,467	115,279
Property and equipment, less accumulated depreciation and amortization of $84,455 and $86,451	120,164	131,848
Other assets	11,638	12,253
Total assets	240,269	259,380
Current liabilities:
Current portion of capital lease obligations	358	340
Accounts payable	4,979	4,739
Accrued liabilities	12,285	15,971
Billings in excess of costs and estimated earnings on uncompleted contracts	4,147	520
Total current liabilities	21,769	21,570
Capital lease obligations, less current portion	667	718
Deferred income taxes	2,461	5,124
Pension and other long-term liabilities	12,321	14,408
Total liabilities	37,218	41,820
Commitments and contingencies (Note 6)
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, 9,601,011 and 9,564,752 shares issued and outstanding	96	96
Additional paid-in-capital	118,207	117,819
Retained earnings	86,086	101,183
Accumulated other comprehensive loss	(1,338)	(1,538)
Total stockholders’ equity	203,051	217,560
Total liabilities and stockholders’ equity	$ 240,269	$ 259,380

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).