Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 25,459	$ 29,804
Receivables, less allowance for doubtful accounts of $574 at March 31, 2016 and $499 at December 31, 2015	20,376	17,481
Inventories	13,218	14,202
Prepaid expenses	2,426	930
Refundable income taxes	897	1,186
Total current assets	62,376	63,603
Property, plant and equipment	91,930	90,564
Less accumulated depreciation and amortization	(45,060)	(44,009)
Net property, plant and equipment	46,870	46,555
Goodwill	7,322	7,322
Intangible assets, net	556	636
Other assets	1,840	1,834
Total assets	118,964	119,950
Current liabilities:
Accounts payable	4,380	4,598
Accrued expenses	3,367	5,374
Current installments of long-term debt	1,016	1,011
Total current liabilities	8,763	10,983
Long-term debt, excluding current installments	603	859
Deferred income taxes	2,970	2,883
Other liabilities	1,868	1,653
Total liabilities	$ 14,204	$ 16,378
Commitments and contingencies
Stockholders' equity:
Preferred stock, $.01 par value. Authorized 1,000,000 shares; zero shares issued or outstanding
Common stock, $.01 par value. Authorized 20,000,000 shares; issued and outstanding 7,178,397 at March 31, 2016 and 7,170,377 shares at December 31, 2015	$ 72	$ 72
Additional paid-in capital	23,818	23,705
Retained earnings	81,457	80,382
Treasury stock at cost - 29,559 shares at March 31, 2016 and December 31, 2015	(587)	(587)
Total stockholders' equity	104,760	103,572
Total liabilities and stockholders' equity	$ 118,964	$ 119,950