CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
CURRENT ASSETS
Cash and cash equivalents	$ 23,589	$ 29,553
Marketable securities	11,319	11,625
Accounts receivable, less allowance of $592 in 2012 and $2,757 in 2011	8,946	11,375
Inventories	15,382	15,771
Deferred income tax asset	1,008	2,028
Refundable income taxes	290	401
Prepaid expenses and other current assets	1,014	985
Total current assets	61,548	71,738
Property and equipment, net	32,370	34,519
Intangible assets, net	11,020	9,459
Deferred income tax asset	717
Other assets	70	102
Total assets	105,725	115,818
CURRENT LIABILITIES
Accounts payable	1,622	1,816
Accrued salaries, wages and payroll taxes	2,929	2,861
Short-term borrowings		23,667
Other current liabilities	1,020	1,104
Total current liabilities	5,571	29,448
Long-term borrowings	22,000
Deferred income tax		1,043
Asset retirement obligations	871	807
Other long-term liabilities	356	398
Total liabilities	28,798	31,696
COMMITMENTS AND CONTINGENCIES
SHAREHOLDERS' EQUITY
Common stock - authorized 100,000 shares of $.01 par value; issued 34,829 in 2012 and 33,991 in 2011	348	340
Additional paid-in capital	75,708	74,705
Retained earnings	11,232	9,093
Accumulated other comprehensive gain (loss)	21	(16)
Common stock in treasury, at cost - 4,762 shares in 2012	(10,382)
Total shareholders' equity	76,927	84,122
Total liabilities and shareholders' equity	$ 105,725	$ 115,818