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Debt (Details) (USD $)
 3 Months Ended 3 Months Ended 0 Months Ended 6 Months Ended 40 Months Ended 0 Months Ended 3 Months Ended 1 Months Ended 1 Months Ended 3 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Fenco [Member]
May 31, 2013
Fenco [Member]
Jun. 30, 2013
Financing Agreement [Member]
Aug. 30, 2013
Financing Agreement [Member]
Jul. 31, 2013
Financing Agreement [Member]
Jun. 28, 2013
Financing Agreement [Member]
May 24, 2012
Financing Agreement [Member]
Term Loans [Member]
Sep. 30, 2013
Financing Agreement [Member]
Term Loans [Member]
Jan. 17, 2017
Financing Agreement [Member]
Term Loans [Member]
May 24, 2012
Financing Agreement [Member]
Term Loans [Member]
Cerberus Warrant [Member]
Jun. 30, 2013
Financing Agreement [Member]
Term Loans [Member]
Cerberus Warrant [Member]
Jun. 30, 2012
Financing Agreement [Member]
Term Loans [Member]
Cerberus Warrant [Member]
Mar. 31, 2013
Financing Agreement [Member]
Term Loans [Member]
Cerberus Warrant [Member]
Aug. 31, 2012
Financing Agreement [Member]
Term Loans [Member]
Cerberus Warrant [Member]
Jun. 30, 2013
Financing Agreement [Member]
Revolving Facility [Member]
Mar. 31, 2013
Financing Agreement [Member]
Revolving Facility [Member]
Jun. 30, 2013
Financing Agreement [Member]
Revolving Facility [Member]
Letter of Credit [Member]
Jun. 30, 2013
Financing Agreement [Member]
Revolving Facility [Member]
Commercial Letter Of Credit [Member]
Jun. 30, 2013
Financing Agreement [Member]
Revolving Facility [Member]
Standby Letters of Credit [Member]
Aug. 31, 2012
Strategic Cooperation Agreement [Member]
Jun. 10, 2014
Strategic Cooperation Agreement [Member]
Dec. 10, 2013
Strategic Cooperation Agreement [Member]
Jun. 30, 2013
Strategic Cooperation Agreement [Member]
Subsequent Event [Member]
Aug. 31, 2012
Strategic Cooperation Agreement [Member]
Supplier Warrant [Member]
Jun. 30, 2013
Strategic Cooperation Agreement [Member]
Supplier Warrant [Member]
Mar. 31, 2013
Strategic Cooperation Agreement [Member]
Supplier Warrant [Member]
Debt Instrument [Line Items]                                                        
Maximum borrowing capacity                 $ 85,000,000               $ 20,000,000   $ 10,000,000     $ 22,000,000            
Debt instrument, maturity date         Jan. 17, 2017                                 Jul. 31, 2017            
Reference interest rate under option 1                 LIBOR                                      
Interest rate over LIBOR rate under option 1 (in hundredths)                 8.50%                                      
Interest rate above base rate under option 2 (in hundredths)                 7.50%                                      
Quarterly principal payments                   600,000 1,350,000                                  
Minimum aggregate level of liquidity financial covenant, added under sixth amendment           27,000,000 26,000,000 25,000,000                                        
Outstanding balance under revolving loan                                 0 0   1,522,000 476,000              
Amount available under revolving facility                                 14,389,000                      
Credit facility available for accrued interest and other amounts payable                                           2,000,000            
Payment terms under the Strategic Cooperation Agreement                                           120 days            
Interest rate (in hundredths)                                           1.00%            
Maximum receivable sale option under the Strategic Cooperation Agreement                                           8,000,000            
Common stock issuances to settle obligations under the receivable sale option (in dollars per share)                                           $ 7.75            
Cash payments to settle obligations under the receivable sale option (in hundredths)                                           135.00%            
Value of common stock for which accrued interest may be sold under the unpaid interest sale option (in dollars per share)                                           $ 7.75            
Value of common stock for which accrued interest may be sold under the unpaid interest sale option (in hundredths)                                           105.00%            
Amount outstanding under revolving line of credit - in default                                                 19,864,000      
Interest rate applicable to unpaid amounts (per month)                                             1.50% 1.25%        
Number of shares that can be purchased under warrants (in shares)                               219,355                   516,129    
Initial exercise price (in dollars per share)                               $ 7.75                   $ 7.75    
Warrant term                       5 years                           2 years    
Aggregate maximum number of shares obligated to issued under the Receivable Sale Option and Supplier Warrants (in shares)                                           1,032,258            
Aggregate maximum number of shares obligated to be issued under the Unpaid Interest Sale Option (in shares)                                           1,572,342            
Fair value of warrants issued                         805,000   375,000                       2,779,000 1,639,000
Total (gain) loss included in net loss (gain) 1,570,000 10,000                     430,000 10,000                         1,140,000  
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                                                        
Revolving loan - in default, deconsolidated     48,520,000 48,520,000                                                
Term loan - in default, deconsolidated     $ 10,000,000 $ 10,000,000