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Debt (Details Textual) (USD $)
 12 Months Ended 12 Months Ended 6 Months Ended
Dec. 31, 2012
Jul. 02, 2012
Dec. 31, 2011
Dec. 31, 2012
Minimum [Member]
Dec. 31, 2012
Maximum [Member]
Jan. 06, 2012
Revolving Loan Limit [Member]
Jan. 06, 2012
Letter of Credit Facility [Member]
Dec. 31, 2012
Revolver Loans [Member]
Jan. 06, 2012
Revolver Loans [Member]
Jan. 06, 2012
Swing Advance Loan [Member]
Debt (Textual) [Abstract]                    
Company Indebtedness $ 5,000,000                  
Weighted average interest rate 2.20%                  
Convertible debt instrument, coupon rate 6.00%                  
Outstanding convertible notes due on July 2, 2012    91,900,000 91,875,000              
Shares of common stock issued to note-holders 1,061,745                  
Revolving loans in a collective maximum principal amount           100,000,000 15,000,000   100,000,000 5,000,000
Additional available borrowing capacity               56,700,000    
Outstanding borrowings under the revolver loans               5,000,000    
Minimum tangible net worth as per amended credit agreement 85,000,000                  
Fixed charge coverage ratio as per amended credit agreement       1.15            
Credit facility covenant terms (a) Minimum Consolidated Net Worth. The Company agreed that it will maintain Consolidated Net Worth, measured as of the end of each Fiscal Quarter, commencing with the Fiscal Quarter ended December 31, 2011, of not less than $85,000,000.(b) Fixed Charge Coverage Ratio. The Company agreed that it will not permit the Fixed Charge Coverage Ratio to be less than 1.15 to 1.0, measured as of the end of each Fiscal Quarter, commencing with the Fiscal Quarter ended December 31, 2011. (c) Consolidated Debt to Consolidated EBITDA Ratio. The Company agreed that it will not permit the Consolidated Debt to Consolidated EBITDA Ratio to exceed 3.5 to 1.0 measured as of the end of each Fiscal Quarter (and in the case of Consolidated EBITDA, for the four-quarter period ending on such date) after the date on which the Senior Subordinated Notes have been redeemed in full.                  
Consolidated debt to earnings before interest taxes depreciation amortization ratio as per the amended credit agreement         3.5          
Unamortized debt discount      $ 5,450,000