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Long-Term Debt - Credit Agreement (Details) - USD ($)
1 Months Ended 3 Months Ended
Feb. 29, 2016
Jun. 30, 2013
Mar. 31, 2016
Mar. 31, 2015
Sep. 30, 2013
Debt Instrument [Line Items]          
Interest charge to accelerate amortization of debt issuance costs     $ 3,837,000 $ 1,218,000  
Number of foreign subsidiaries designated as not subject to Credit Agreement covenants     5    
Term Loan Maturing June 2018 [Member]          
Debt Instrument [Line Items]          
Borrowing capacity   $ 300,000,000      
Percentage of scheduled principal installments     10.00%    
Scheduled principal installments     $ 30,000,000    
Balloon payment     $ 180,000,000    
Maturity date   Jun. 19, 2018      
Term Loan Maturing June 2018 [Member] | Interest Rate Swaps [Member]          
Debt Instrument [Line Items]          
Notional amount         $ 148,100,000
Term Loan Maturing June 2018 [Member] | LIBOR [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     2.75%    
Term Loan Maturing June 2018 [Member] | Minimum [Member] | Interest Rate Swaps [Member]          
Debt Instrument [Line Items]          
Fixed LIBOR rate on interest rate swaps (as a percent)         0.74%
Term Loan Maturing June 2018 [Member] | Minimum [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     1.00%    
Term Loan Maturing June 2018 [Member] | Minimum [Member] | LIBOR [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     2.00%    
Term Loan Maturing June 2018 [Member] | Maximum [Member] | Interest Rate Swaps [Member]          
Debt Instrument [Line Items]          
Fixed LIBOR rate on interest rate swaps (as a percent)         0.75%
Term Loan Maturing June 2018 [Member] | Maximum [Member] | Base Rate [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     3.00%    
Term Loan Maturing June 2018 [Member] | Maximum [Member] | LIBOR [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate (as a percent)     4.00%    
Revolving Credit Facility Maturing June 2018 [Member]          
Debt Instrument [Line Items]          
Borrowing capacity $ 400,000,000 $ 600,000,000      
Increase in aggregate commitments (up to)   $ 200,000,000      
Available borrowing capacity     $ 146,800,000    
Letters of credit issued     $ 5,800,000    
Commitment fee percentage     0.50%    
Interest charge to accelerate amortization of debt issuance costs $ 2,500,000