Consolidated Balance Sheets (unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
ASSETS
Cash and cash equivalents	$ 3,837	$ 8,319
Accounts receivable, net of allowance for doubtful accounts of $554 and $662 at March 31, 2013 and December 31, 2012, respectively	18,734	17,018
Inventories	2,333	2,231
Other current assets	1,196	774
Total current assets	26,100	28,342
Property, plant and equipment at cost	50,066	49,675
Less: Accumulated depreciation and amortization	42,721	41,961
Property, plant and equipment, net	7,345	7,714
Other assets	1,400	362
Total assets	34,845	36,418
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	7,696	6,783
Accrued expenses	4,500	4,589
Total current liabilities	12,196	11,372
Other long-term liabilities	1,113	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 at March 31, 2013 and December 31, 2012; Outstanding: 69,835,387 shares at March 31, 2013 and December 31, 2012	2,794	2,794
Additional paid-in capital	149,777	149,542
Accumulated deficit	(130,964)	(128,404)
Stockholders' equity before treasury stock	21,607	23,932
Less: Treasury stock, at cost; 9,395 shares at March 31, 2013 and December 31, 2012	(71)	(71)
Total stockholders' equity	21,536	23,861
Total liabilities and stockholders' equity	$ 34,845	$ 36,418