Consolidated Balance Sheets (unaudited) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
ASSETS (Note 8)
Cash and cash equivalents	$ 20,873	$ 21,391
Accounts receivable, net of allowance for doubtful accounts of $657 and $910 at June 30, 2011 and December 31, 2010, respectively	17,781	19,484
Inventories	2,403	2,153
Other current assets	1,556	1,899
Total current assets	42,613	44,927
Property, plant and equipment at cost	51,905	49,895
Less: Accumulated depreciation and amortization	39,721	38,248
Property, plant and equipment, net	12,184	11,647
Intangible assets, net	357	537
Other assets	368	368
Total assets	55,522	57,479
LIABILITIES AND STOCKHOLDERS' EQUITY
Accounts payable	5,711	6,665
Accrued expenses	6,319	5,941
Total current liabilities	12,030	12,606
Other long-term liabilities	1,287	1,247
Commitments and contingencies
Stockholders' Equity:
Common stock, par value $.04 per share; authorized 240,000,000 shares, issued 69,628,982 shares and 69,598,982 shares as of June 30, 2011 and December 31, 2010, respectively. Outstanding: 69,619,587 shares and 69,589,587 shares at June 30, 2011 and December 31, 2010, respectively.	2,785	2,784
Additional paid-in capital	148,451	148,195
Accumulated deficit	(108,960)	(107,282)
Stockholders' equity before treasury stock	42,276	43,697
Less: Treasury stock, at cost; 9,395 shares as of June 30, 2011 and December 31, 2010	(71)	(71)
Total stockholders' equity	42,205	43,626
Total liabilities and stockholders' equity	$ 55,522	$ 57,479