CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
CURRENT ASSETS
Cash and cash equivalents	$ 13,268	$ 16,552
Accounts receivable, trade, less allowances for doubtful accounts of $755 and $833 in 2015 and 2014, respectively	13,016	12,057
Inventories, net	7,690	8,248
Prepaid expenses	1,612	1,789
Deferred tax assets	72	72
Income tax receivable	8,252	8,252
Other current assets	3,433	2,283
Total current assets	47,343	49,253
Property, plant and equipment, net	20,201	20,195
Other noncurrent assets	342	354
Total assets	67,886	69,802
CURRENT LIABILITIES
Accounts payable	3,607	2,653
Accrued liabilities (Note 7)	4,045	2,780
Income taxes payable	1,877	1,865
Other current liabilities		204
Total current liabilities	9,529	7,502
Deferred tax liabilities	72	72
Other long-term liabilities	4,555	4,505
Total liabilities	14,156	12,079
COMMITMENTS AND CONTINGENCIES (Note 8)
Stockholders' Equity
Preferred stock, $0.01 par value, 20,000,000 shares authorized; no shares issued and outstanding
Common stock, $0.01 par value, 200,000,000 shares authorized; 18,082,014 and 18,080,774 issued and outstanding, respectively, in 2015 and 18,074,291 and 18,073,051 issued and outstanding, respectively, in 2014	181	181
Treasury stock, at cost	(57)	(57)
Additional paid-in capital	230,430	230,276
Accumulated deficit	(171,244)	(168,618)
Accumulated other comprehensive loss, net	(5,580)	(4,059)
Total stockholders' equity	53,730	57,723
Total liabilities and stockholders' equity	$ 67,886	$ 69,802