Condensed Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current Assets
Cash and cash equivalents	$ 7,325	$ 10,723
Restricted cash	1,031	503
Accounts receivable - trade, net	17,043	13,525
Bank acceptance receivable	0	1,034
Inventories	16,421	12,493
Prepaid expenses and other current assets	3,765	968
Total current assets	45,585	39,246
Property, plant and equipment, net	27,125	24,838
Land use rights, net	957	674
Intangible assets, net	828	795
Other assets, net	1,439	195
TOTAL ASSETS	75,934	65,748
Current liabilities
Current portion of notes payable and long-term debt	12,095	13,900
Accounts payable	11,282	6,913
Bank acceptance payable	3,040	1,521
Accrued liabilities	3,557	3,243
Total current liabilities	29,974	25,577
Notes payable and long-term debt, less current portion	14,618	9,163
TOTAL LIABILITIES	44,592	34,740
Stockholders' equity (deficit):
Redeemable Convertible Preferred Stock and Convertible Preferred Stock; 172,200 shares authorized; 5,547 shares issued and outstanding at December 31, 2012, no par value; 5,600 shares issued and outstanding at September 30, 2013, $0.001 par value	105,801	105,367
Common Stock; 300,000 shares authorized; 266 shares issued and outstanding at December 31, 2012, no par value; 290 shares issued and outstanding at September 30, 2013, $0.001 par value	1,222	1,074
Additional paid-in capital	4,801	4,468
Accumulated other comprehensive gain	2,320	2,016
Accumulated deficit	(82,802)	(81,917)
TOTAL STOCKHOLDERS' EQUITY	31,342	31,008
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 75,934	$ 65,748