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Debt - Debt Summary (Details)
€ in Thousands, $ in Thousands
3 Months Ended 12 Months Ended 96 Months Ended
Apr. 03, 2012
USD ($)
Mar. 27, 2012
USD ($)
May 05, 2010
USD ($)
Jun. 30, 2017
USD ($)
Mar. 31, 2017
EUR (€)
Mar. 31, 2017
USD ($)
Mar. 31, 2016
USD ($)
Mar. 31, 2017
USD ($)
Feb. 01, 2025
EUR (€)
Feb. 01, 2025
USD ($)
Mar. 31, 2017
USD ($)
Dec. 31, 2016
Debt Instrument [Line Items]                        
Document Period End Date               Mar. 31, 2017        
Proceeds from Issuance of Debt             $ 33,881       $ 33,881  
Debt, Long-term and Short-term, Combined Amount             387,833       388,211  
Current maturities             (2,000)       (2,000)  
Total long-term debt             385,833       386,211  
10.5% Senior Notes                        
Debt Instrument [Line Items]                        
Proceeds from Issuance of Debt $ 15,000 $ 110,000 $ 230,000                  
Unamortized Debt Issuance Expense             2,800       $ 1,400  
Amortization of Financing and Debt Discount             1,000 $ 500        
Stated interest rate (as a percent)     10.50%   10.50%           10.50% 10.50%
Total debt             353,952       $ 352,472  
Letter of Credit One [Member]                        
Debt Instrument [Line Items]                        
Proceeds from Issuance of Debt             33,881       33,881  
Other Debt Obligations [Member]                        
Debt Instrument [Line Items]                        
Proceeds from Issuance of Debt         € 2,200 $ 2,400            
Amortization of Financing and Debt Discount               $ 500        
Debt Instrument, Unamortized Discount         € 500           600  
Total debt             $ 0       $ 1,858  
Subsequent Event | 10.5% Senior Notes                        
Debt Instrument [Line Items]                        
Proceeds from Issuance of Debt       $ 345,000                
Scenario, Forecast | Other Debt Obligations [Member]                        
Debt Instrument [Line Items]                        
Long-term Debt, Maturities, Repayment Terms                 P8Y P8Y    
Repayments of Other Debt                 € 185 $ 198