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Long-Term Debt Narrative (Details) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2015
Mar. 24, 2014
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Senior Notes          
Debt Instrument [Line Items]          
Face amount   $ 200,000,000      
Stated interest rate (percent)   6.75%      
Restricted Payments (percent)   50.00%      
Debt Issuance Cost     $ 3,963,000 $ 4,591,000 $ 4,126,000
Line of Credit | 2015 Credit Facility [Member]          
Debt Instrument [Line Items]          
Maximum borrowing capacity     210,000,000    
Amount outstanding     40,000,000    
Remaining borrowing capacity     $ 170,000,000    
Interest rate at end of period (percent)     3.00%    
Net proceeds     $ (18,000,000)    
Line of Credit | 2015 Credit Facility [Member] | 30-day LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (percent) 2.50%        
Line of Credit | 2015 Credit Facility [Member] | Prime Rate          
Debt Instrument [Line Items]          
Basis spread on variable rate (percent) 1.50%        
Line of Credit | Mexico Credit Facility          
Debt Instrument [Line Items]          
Maximum borrowing capacity     $ 10,000,000    
Expiration date     Dec. 09, 2017    
Remaining borrowing capacity     $ 10,000,000    
Commitment fee amount     $ 25,000    
Line of Credit | Mexico Credit Facility | 30-day LIBOR          
Debt Instrument [Line Items]          
Basis spread on variable rate (percent)     2.00%