Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Cash flows from operating activities:    
Net (loss) income $ (2,739) $ 2,918
Adjustments to reconcile net (loss) income to net cash used in operating activities:    
Depreciation 2,910 3,117
Amortization 37 27
Land use rights amortization 117 113
Deferred income tax expense    1,133
Share-based compensation expense    380
Changes in operating assets and liabilities:    
Bills receivable 1,238 (2,033)
Accounts receivable (5,148) (1,559)
Inventories 2,987 (8,339)
Prepayments to suppliers (23,628) (19,077)
Consumption tax refund receivable 27,080 (25,219)
Other current assets (3,472) 9,967
Accounts payable 781 (24,152)
Advances from (to) customers (2,342) (3,757)
Income taxes payable (1,491) (1,417)
Accrued expenses and other payables (874) 780
Net cash used in operating activities (4,544) (67,118)
Cash flows from investing activities:    
Purchase of property, plant and equipment (9,604) (11,382)
Net cash used in investing activities (9,604) (11,382)
Cash flow from financing activities:    
Pledged bank deposits used for bank borrowings (95,308) (50,687)
Proceeds from short-term bank borrowings 365,125 297,548
Repayment of short-term bank borrowings (232,738) (183,067)
Proceeds from bank notes 177,471 57,116
Repayments of bank notes (198,145) (45,884)
Repurchase of treasury stock (168)   
Net cash provided by financing activities 16,237 75,027
Effect of foreign currency exchange rate changes on cash (315) 60
Net increase (decrease) in cash 1,774 (3,413)
Cash at beginning of year 12,309 23,378
Cash at end of year 14,083 19,965
Supplemental disclosure of cash flow information:    
Income tax paid 1,480 1,579
Interest paid, net of capitalized interest    3,396
Non cash investing and financing activities:    
Payable for purchase of property, plant and equipment (net of VAT) $ 14,126 $ 2,798