Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 27,007	$ 29,804
Receivables, less allowance for doubtful accounts of $611 at June 30, 2016 and $499 at December 31, 2015	23,020	17,481
Inventories	13,884	14,202
Prepaid expenses	2,595	930
Refundable income taxes	480	1,186
Total current assets	66,986	63,603
Property, plant and equipment	94,673	90,564
Less accumulated depreciation and amortization	(46,348)	(44,009)
Net property, plant and equipment	48,325	46,555
Goodwill	7,322	7,322
Intangible assets, net	477	636
Other assets	1,869	1,834
Total assets	124,979	119,950
Current liabilities:
Accounts payable	5,463	4,598
Accrued expenses	4,769	5,374
Current installments of long-term debt	1,020	1,011
Total current liabilities	11,252	10,983
Long-term debt, excluding current installments	345	859
Deferred income taxes	3,107	2,883
Other liabilities	1,765	1,653
Total liabilities	16,469	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 7,223,048 at June 30, 2016 and 7,170,377 shares at December 31, 2015	72	72
Additional paid-in capital	24,833	23,705
Retained earnings	84,192	80,382
Treasury stock at cost - 29,559 shares at June 30, 2016 and December 31, 2015	(587)	(587)
Total stockholders' equity	108,510	103,572
Total liabilities and stockholders' equity	$ 124,979	$ 119,950