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RESTATEMENT OF PREVIOUSLY ISSUED FINANCIAL STATEMENTS (Details 4) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2013
Sep. 30, 2012
Dec. 31, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net loss $ (2,398) $ (3,938) $ (6,753) $ (12,029) $ (17,907)
Depreciation and amortization expense 3,379 4,367 11,412 12,227  
Impairment charges     288    
Stock-based compensation     1,438 2,079  
Allowance for doubtful accounts     (274) 158  
Common stock issued under defined contribution 401(k) plan     499 345 (523)
(Gain) loss on disposal of assets     (3,576) 220  
Changes in operating assets and liabilities:          
Accounts receivable     (1,463) (3,318)  
Inventories     (10,868) (5,672)  
Prepaid expenses and other current assets     1,228 1,078  
Accounts payable     11,399 (3,175)  
Accrued liabilities     1,123 (110)  
Customer deposits     17,419 (13,411)  
Other non-current assets and liabilities     (365) 1,319  
Net cash provided by (used in) operating activities     21,507 (20,289)  
CASH FLOWS FROM INVESTING ACTIVITIES:          
Proceeds from sale of logistics business and related note receivable     250 375  
Purchases of available for sale securities     (867)    
Purchases of property and equipment     (4,357) (3,300)  
Proceeds from disposals of property and equipment     12,533 106  
(Increase) decrease in restricted cash     (1) 546  
Net cash provided by (used in) investing activities     7,558 (2,273)  
CASH FLOWS FROM FINANCING ACTIVITIES:          
Payments on lines of credit and notes payable     (80,233) (24,190)  
Proceeds from lines of credit and notes payable     75,208 36,908  
Principal payments on capital leases     (1,730) (1,145)  
Net Cash Provided by (Used in) Financing Activities     (6,755) 11,943  
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS     22,310 (10,619)  
CASH AND CASH EQUIVALENTS, beginning of the period     516 13,340 13,340
CASH AND CASH EQUIVALENTS, end of the period 22,826 2,721 22,826 2,721 516
As Previously Reported
          
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net loss (2,491)   (7,703)    
Depreciation and amortization expense     11,412    
Impairment charges     288    
Stock-based compensation     1,438    
Allowance for doubtful accounts     (274)    
Common stock issued under defined contribution 401(k) plan     499    
(Gain) loss on disposal of assets     (3,576)    
Changes in operating assets and liabilities:          
Accounts receivable     (1,613)    
Inventories     (10,637)    
Prepaid expenses and other current assets     1,228    
Accounts payable     12,337    
Accrued liabilities     1,054    
Customer deposits     17,419    
Other non-current assets and liabilities     (365)    
Net cash provided by (used in) operating activities     21,507    
CASH FLOWS FROM INVESTING ACTIVITIES:          
Proceeds from sale of logistics business and related note receivable     250    
Purchases of available for sale securities     (867)    
Purchases of property and equipment     (5,967)    
Proceeds from disposals of property and equipment     12,533    
(Increase) decrease in restricted cash     (1)    
Net cash provided by (used in) investing activities     5,948    
CASH FLOWS FROM FINANCING ACTIVITIES:          
Payments on lines of credit and notes payable     (80,233)    
Proceeds from lines of credit and notes payable     75,208    
Principal payments on capital leases     (120)    
Net Cash Provided by (Used in) Financing Activities     (5,145)    
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS     22,310    
CASH AND CASH EQUIVALENTS, beginning of the period     516    
CASH AND CASH EQUIVALENTS, end of the period 22,826   22,826    
Restatement Adjustments
          
CASH FLOWS FROM OPERATING ACTIVITIES:          
Net loss 93   950    
Changes in operating assets and liabilities:          
Accounts receivable     (150)    
Inventories     (231)    
Accounts payable     (938)    
Accrued liabilities     69    
CASH FLOWS FROM INVESTING ACTIVITIES:          
Purchases of property and equipment     1,610    
CASH FLOWS FROM FINANCING ACTIVITIES:          
Principal payments on capital leases     $ (1,610)