Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
ASSETS (Note 8)
Cash and cash equivalents	$ 8,161	$ 16,917
Accounts receivable, net of allowance for doubtful accounts of $509 and $525 at September 30, 2012 and December 31, 2011, respectively	18,503	18,387
Inventories	2,738	2,226
Other current assets	1,144	2,140
Total current assets	30,546	39,670
Property, plant and equipment at cost	51,266	54,333
Less: Accumulated depreciation and amortization	37,800	41,281
Property, plant and equipment, net	13,466	13,052
Intangible assets, net	35	195
Other assets	308	364
Total assets	44,355	53,281
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	6,700	5,174
Accrued expenses	5,992	6,173
Total current liabilities	12,692	11,347
Other long-term liabilities	1,236	1,185
Commitments and contingencies (Note 9)
Stockholders' Equity:
Common stock, par value $.04 per share; authorized 240,000,000 shares, issued 69,844,782 shares and 69,678,982 shares at September 30, 2012 and December 31, 2011, respectively. Outstanding: 69,835,387 shares and 69,669,587 shares at September 30, 2012 and December 31, 2011, respectively.	2,794	2,787
Additional paid-in capital	149,371	148,839
Accumulated deficit	(121,667)	(110,806)
Stockholders' equity before treasury stock	30,498	40,820
Less: Treasury stock, at cost; 9,395 shares as of September 30, 2012 and December 31, 2011	(71)	(71)
Total stockholders' equity	30,427	40,749
Total liabilities and stockholders' equity	$ 44,355	$ 53,281