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Debt (Details 2) - Geographical [Domain] - Short-term Debt, Type [Domain] - USD ($)
6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Apr. 30, 2013
Debt Instrument [Line Items]        
Debt issuance cost $ 100,000 $ 200,000    
Restricted Cash and Cash Equivalents 4,900,000   $ 6,200,000  
Debt and Capital Lease Obligations $ 48,100,000   $ 49,200,000  
Debt, Weighted Average Interest Rate 8.00%   9.10%  
Description of variable rate basis either the London Interbank Offered Rate (LIBOR) or an alternative base rate, plus a margin that varies with borrowing availability under the revolving credit facility      
Capital Lease Obligations [Member]        
Debt Instrument [Line Items]        
Capital Lease Obligations $ 1,500,000      
UNITED STATES | Secured Debt [Member] | Secured loan, Mississippi Development Authority [Member]        
Debt Instrument [Line Items]        
Secured Loan, maximum borrowing capacity $ 1,500,000      
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate       2.25%
Debt Instrument, Maturity Date Feb. 01, 2021      
Line of Credit Facility, Amount Outstanding $ 1,200,000      
Debt Instrument, Issuance Date Apr. 01, 2013      
UNITED STATES | Loans Payable [Member]        
Debt Instrument [Line Items]        
Long-term Debt, Gross $ 400,000      
BRAZIL        
Debt Instrument [Line Items]        
Total Debt Short and Long Term 27,300,000      
Foreign Line of Credit [Member] | BRAZIL        
Debt Instrument [Line Items]        
Remaining borrowing capacity 8,500,000      
Line of Credit Facility, Maximum Borrowing Capacity 35,800,000.0      
Foreign Line of Credit [Member] | INDIA        
Debt Instrument [Line Items]        
Remaining borrowing capacity 3,000,000      
Line of Credit Facility, Maximum Borrowing Capacity 10,400,000.0      
Short-term Debt 7,400,000      
Pnc Bank [Member] | Revolving Credit Facility [Member]        
Debt Instrument [Line Items]        
Remaining borrowing capacity 3,600,000      
Pnc Bank [Member] | Revolving Credit Facility [Member] | UNITED STATES        
Debt Instrument [Line Items]        
Line of Credit Facility, Fair Value of Amount Outstanding 2,500,000      
Line of Credit Facility, Maximum Borrowing Capacity 34,000,000.0      
Pnc Bank [Member] | Secured Debt [Member] | UNITED STATES        
Debt Instrument [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity 15,000,000      
Long-term Debt 6,800,000      
Pnc Bank [Member] | Letter of Credit [Member] | UNITED STATES        
Debt Instrument [Line Items]        
Line of Credit Facility, Maximum Borrowing Capacity $ 10,000,000.0