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Debt (Details Textual) (USD $)
0 Months Ended
Apr. 15, 2014
Convertible Notes Due 2014 [Member]
Jun. 28, 2014
Bank of America Syndicate [Member]
Credit Agreement [Member]
Jun. 28, 2014
Bank of America Syndicate [Member]
Revolving Credit Facility [Member]
Credit Agreement [Member]
Jun. 28, 2014
Bank of America Syndicate [Member]
Standby Letters of Credit [Member]
Credit Agreement [Member]
Jun. 28, 2014
Bank of America Syndicate [Member]
Swingline Loan [Member]
Credit Agreement [Member]
Debt Instrument [Line Items]          
Repayments of Convertible Debt $ 87,500,000        
Interest Paid 400,000        
Line of Credit Facility, Maximum Borrowing Capacity     125,000,000 5,000,000 5,000,000
Line of Credit Facility, Maximum amount of increase that may be requested     50,000,000    
Line of Credit Facility, Amount Outstanding   $ 0