Quarterly report pursuant to Section 13 or 15(d)

Debt and Interest Rate Swap (Details)

v3.21.1
Debt and Interest Rate Swap (Details) - USD ($)
$ in Thousands
3 Months Ended 8 Months Ended 47 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Jul. 31, 2020
Nov. 03, 2017
May 12, 2017
Debt Instrument [Line Items]                
Long-Term Debt, Maturity, Remainder of Fiscal Year $ 0   $ 0 $ 0        
Long-Term Debt, Maturity, Year One 6,562   6,562 6,562        
Long-Term Debt, Maturity, Year Two 131,250   131,250 131,250        
Long-Term Debt, Maturity, Year Three 212,000   212,000 212,000        
Long-Term Debt, Maturity, Year Four 0   0 0        
Long-term Debt, Current Maturities 0   0 0        
Debt Instrument, Unamortized Discount               $ (2,100)
Long-term Debt 349,812   349,812 349,812        
Long-term Debt, Excluding Current Maturities 344,116   344,116 344,116 $ 363,592      
Line of Credit Facility, Incremental Borrowing Capacity $ 160,000   $ 160,000 $ 160,000        
Debt Instrument, Frequency of Periodic Payment quarterly installments              
Debt Instrument, Call Feature 1.0% soft call premium              
Document Period End Date Mar. 31, 2021              
Debt Instrument, Interest Rate, Effective Percentage 3.70%   3.70% 3.70% 4.40%     4.60%
Long-term Debt, Fair Value $ 351,800   $ 351,800 $ 351,800 $ 376,100     $ 398,500
Debt Issuance Costs, Gross               6,000
Amortization of debt issuance costs and accretion of discount on debt and leases $ 500 $ 300            
Derivative, Fixed Interest Rate 4.25%   4.25% 4.25%     1.74685%  
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)   200            
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax $ 0 $ (153)            
Debt Instrument, Covenant Description The Incremental Term Loan is subject to a financial covenant of an initial maximum total net leverage ratio of 3.5 to 1 which decreases to 3.0 to 1 beginning with the sixth full fiscal quarter ending after July 31, 2020. During any period during which the Company (i) fails to maintain a public corporate rating from S&P that is equal to or higher than BB- and a public corporate rating from Moody's that is equal to or higher than Ba3 or (ii) fails to maintain a total leverage ratio of 3.0 to 1 or less, the applicable margin will increase to 4.75% in the case of LIBOR Rate loans and 3.75% in the case of Base Rate loans.              
Base Rate [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Interest Rate Terms a base rate              
Fed Funds Effective Rate Overnight Index Swap Rate [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Interest Rate Terms the federal funds rate, plus 0.50%              
Prime Rate [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Interest Rate Terms prime rate              
One, Two, Or Three Month London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Interest Rate Terms an adjusted LIBOR rate determined on the basis of a one- three- or six-month interest period, plus 1.0%              
London Interbank Offered Rate (LIBOR) Subject to Floor [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Interest Rate Terms adjusted LIBOR rate, subject to a floor of 0.75%              
London Interbank Offered Rate (LIBOR) [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Basis Spread on Variable Rate 2.50%              
Medium-term Notes [Member]                
Debt Instrument [Line Items]                
Long-term Debt, Gross $ 349,812   $ 349,812 $ 349,812 369,812     $ 425,000
Debt Instrument, Unamortized Discount (1,615)   (1,615) (1,615) (1,767)      
Debt Issuance Costs, Net (4,081)   (4,081) (4,081) (4,453)      
Long-term Debt 344,116   344,116 344,116 363,592      
Long-term Debt, Current Maturities 0   0 0 0      
Long-term Debt, Excluding Current Maturities 344,116   344,116 344,116 363,592      
Term A Loan [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Unamortized Discount           $ (900)    
Debt Instrument, Interest Rate, Effective Percentage           3.20%    
Long-term Debt, Fair Value           $ 181,100    
Debt Issuance Costs, Gross           1,800    
Term B                
Debt Instrument [Line Items]                
Long-term Debt, Gross $ 212,000   $ 212,000 $ 212,000 212,000      
Debt Instrument, Quarterly Amortization Rate 0.25%   0.25% 0.25%        
Repayments of Debt       $ 213,000        
Term B | Base Rate [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Basis Spread on Variable Rate 1.50%              
Term B | London Interbank Offered Rate (LIBOR) Subject to Floor [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Basis Spread on Variable Rate 2.50%              
Term A                
Debt Instrument [Line Items]                
Long-term Debt, Gross $ 137,812   $ 137,812 $ 137,812 $ 157,812 $ 175,000    
Repayments of Debt     $ 37,200          
Term A | Debt amortization period 1 [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Quarterly Amortization Rate 1.25%   1.25% 1.25%        
Term A | Debt amortization, period 2 [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Quarterly Amortization Rate 2.50%   2.50% 2.50%        
Term A | Debt amortization period 3 [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Quarterly Amortization Rate 3.75%   3.75% 3.75%        
Term A | Base Rate [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Basis Spread on Variable Rate 3.25%              
Term A | London Interbank Offered Rate (LIBOR) Subject to Floor [Member]                
Debt Instrument [Line Items]                
Debt Instrument, Basis Spread on Variable Rate 4.25%