BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash	$ 5,030	$ 5,734
Accounts receivable, net of allowance of $120 in 2013 and $125 in 2012	7,901	5,406
Inventories, net	11,802	10,275
Income taxes receivable	1,063	607
Short-term investments	5,033	5,027
Prepaid expenses	1,129	637
Other current assets		44
Deferred income taxes	277	393
Total current assets	32,235	28,123
Property, plant and equipment	133,143	125,579
Accumulated depreciation	(40,082)	(34,391)
Net property, plant and equipment	93,061	91,188
Deferred debt issuance costs, net of accumulated amortization of $16 in 2013 and $11 in 2012	42	47
Total assets	125,338	119,358
Current liabilities:
Accounts payable	3,312	3,685
Accrued liabilities	3,540	2,832
Current portion of long-term debt	1,152	1,152
Total current liabilities	8,004	7,669
Long-term debt, less current portion	14,215	15,079
Deferred income taxes	19,590	19,432
Stockholders' equity:
Common stock, $.001 par value, 25,000,000 shares authorized, 8,026,309 and 7,642,475 shares issued and outstanding in 2013 and 2012, respectively	8	8
Additional paid-in capital	45,523	41,238
Retained earnings	37,998	35,932
Total stockholders' equity	83,529	77,178
Total liabilities and stockholders' equity	$ 125,338	$ 119,358