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LONG-TERM DEBT OBLIGATIONS LONG-TERM DEBT OBLIGATIONS - Senior Credit Facility (Details)
1 Months Ended 12 Months Ended
Oct. 27, 2015
USD ($)
Oct. 26, 2015
USD ($)
Jul. 28, 2014
Jun. 25, 2012
USD ($)
Oct. 31, 2015
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Debt Instrument [Line Items]                
Debt instrument, face amount       $ 85,000,000        
Original revolving credit facility       $ 15,000,000        
Debt Instrument, Covenant Compliance           As of December 31, 2014, the Company was in compliance with the covenants.    
Interest expense           $ 6,609,000 $ 6,373,000 $ 12,711,000
Line of Credit [Member] | Senior Credit Facility Agreement [Member]                
Debt Instrument [Line Items]                
Debt term   5 years            
Debt instrument, face amount   $ 100,000,000.0            
Optional increase in maximum borrowing capacity   $ 50,000,000.0            
Interest rate at period end           2.07%    
Threshold trigger for mandatory prepayments   105.00%            
Debt Instrument, Covenant Compliance           As of December 31, 2015, the Company was in compliance with the covenants.    
Proceeds from lines of credit $ 20,000,000              
Unamortized discount 100,000              
Deferred financing costs $ 200,000              
Interest expense           $ 100,000    
Line of Credit [Member] | Senior Credit Facility Agreement [Member] | Federal Funds Effective Swap Rate [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate   0.50%            
Line of Credit [Member] | Senior Credit Facility Agreement [Member] | Eurodollar [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate   1.00%            
Term Loan [Member]                
Debt Instrument [Line Items]                
Debt term       5 years        
Write off of debt issuance costs         $ 700,000      
Revolving Credit Facility [Member] | Line of Credit [Member] | Senior Credit Facility Agreement [Member]                
Debt Instrument [Line Items]                
Original revolving credit facility   $ 100,000,000.0            
Interest Rate Option One [Member] | Line of Credit [Member] | Senior Credit Facility Agreement [Member] | Base Rate [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate   0.50%            
Interest Rate Option One [Member] | Line of Credit [Member] | Senior Credit Facility Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate   1.50%            
Interest Rate Option Two [Member] | Line of Credit [Member] | Senior Credit Facility Agreement [Member] | Base Rate [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate   1.00%            
Interest Rate Option Two [Member] | Line of Credit [Member] | Senior Credit Facility Agreement [Member] | London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate   2.00%            
Minimum [Member] | Base Rate [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate     1.50%          
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate     2.50%          
Minimum [Member] | Line of Credit [Member] | Senior Credit Facility Agreement [Member]                
Debt Instrument [Line Items]                
Interest coverage ratio   3.50            
Maximum [Member] | Base Rate [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate     1.75%          
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument [Line Items]                
Basis spread on variable rate     2.75%          
Maximum [Member] | Line of Credit [Member] | Senior Credit Facility Agreement [Member]                
Debt Instrument [Line Items]                
Initial consolidated leverage ratio   3.50            
Subsequent consolidated leverage ratio   2.75