Unaudited Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 248	$ 2,700
Restricted cash	0	150
Accounts receivable, net of allowance for doubtful accounts of $560 and $714 at March 31, 2013 and December 31, 2012, respectively	46,167	42,259
Inventories, net	44,836	45,177
Deferred tax assets, net	1,280	1,274
Other current assets	2,839	4,654
Total current assets	95,370	96,214
Property and equipment, net	57,158	56,499
Goodwill	26,943	26,943
Deferred tax assets, net	15,381	16,045
Other intangible assets, net	23,631	24,166
TOTAL ASSETS	218,483	219,867
Current liabilities:
Accounts payable	18,565	22,373
Accrued liabilities	6,664	6,503
Income taxes payable	3,038	3,479
Interest payable	100	114
Convertible senior notes, net of discount	0	5,133
Current portion of long-term debt	5,432	4,329
Total current liabilities	33,799	41,931
Long-term debt, less current portion	21,673	22,455
Deferred tax liabilities, net	394	751
Total liabilities	55,866	65,137
Commitments and contingencies
Stockholders’ equity:
Cumulative convertible preferred stock, $0.0001 par value, 100,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.0001 par value, 80,000,000 shares authorized; 53,862,179 shares issued and 47,557,586 shares outstanding at March 31, 2013; 53,123,978 shares issued and 49,601,495 shares outstanding at December 31, 2012	5	5
Additional paid-in capital	200,642	195,485
Accumulated other comprehensive income (loss)	(60)	(40)
Accumulated deficit	(29,254)	(37,019)
Treasury stock, at cost; 4,980,366 and 2,198,193 shares at March 31, 2013 and December 31, 2012, respectively	(8,716)	(3,701)
Total stockholders’ equity	162,617	154,730
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 218,483	$ 219,867