Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Cash flows from operating activities:
Net income	$ 2,421	$ 2,907
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation	6,047	5,452
Amortization	48	54
Land use rights amortization	234	226
Deferred income tax (benefit) expense	1,086
Share-based compensation expense	764	819
Changes in operating assets and liabilities:
Bills receivable	(8,116)	(1,727)
Accounts receivable	3,988	2,244
Inventories	(6,339)	(33,864)
Prepayments to suppliers	(7,645)	(25,882)
Consumption tax refund receivable	(40,834)	(50,875)
Other current assets	3,359	(16,566)
Accounts payable	(19,970)	(18,462)
Advances (to) from customers	(18,593)	29,342
Income taxes payable	(2,595)	880
Accrued expenses and other payables	(646)	(1,483)
Net cash used in operating activities	(86,791)	(106,935)
Cash flows from investing activities:
Purchase of property, plant and equipment	(28,318)	(21,296)
Net cash used in investing activities	(28,318)	(21,296)
Cash flow from financing activities:
Pledged bank deposits used for bank borrowings	(90,005)	(82,489)
Proceeds from short-term bank borrowings	646,075	457,866
Repayment of short-term bank borrowings	(504,884)	(291,149)
Proceeds from bank notes	130,724	111,379
Repayments of bank notes	(87,644)	(64,059)
Net cash provided by financing activities	94,266	131,548
Effect of foreign currency exchange rate changes on cash	(226)	(763)
Net (decrease) increase in cash	(21,069)	2,554
Cash at beginning of period	23,378	7,325
Cash at end of period	2,309	9,879
Supplemental disclosure of cash flow information:
Income tax paid	3,056	1,029
Interest paid, net of capitalized interest	10,441	589
Non cash investing and financing activities:
Payable for purchase of property, plant and equipment (net of VAT)	$ 6,068	$ 4,434