Quarterly report pursuant to Section 13 or 15(d)

Derivative Financial Instruments - Gain (Loss) on Derivatives (Details)

v3.19.1
Derivative Financial Instruments - Gain (Loss) on Derivatives (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Dec. 24, 2018
Mar. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]          
Cash flow hedge, gain (loss), tax   $ 200      
Net income $ 11,272 10,901      
Cash flow hedges, effect of tax   (100)      
Interest rate swaps | Cash flow hedges          
Derivative Instruments, Gain (Loss) [Line Items]          
Gain (Loss) Recognized in OCI (586)        
Gain (Loss) Recognized in OCI   258      
Interest Expense and Other | Interest rate swaps | Cash flow hedges          
Derivative Instruments, Gain (Loss) [Line Items]          
Gain (Loss) Recognized in Income 220        
Gain (Loss) Recognized in Income   $ 99      
Other Assets | Interest rate swaps          
Derivative Instruments, Gain (Loss) [Line Items]          
Notional amount         $ 75,000
Other Assets | Level 2 | Derivative Financial Instruments | Recurring | Interest rate swaps          
Derivative Instruments, Gain (Loss) [Line Items]          
Notional amount 75,000   $ 75,000    
Fair Value 590   923    
Other long-term liabilities | Interest rate swaps          
Derivative Instruments, Gain (Loss) [Line Items]          
Notional amount       $ 100,000  
Other long-term liabilities | Level 2 | Derivative Financial Instruments | Recurring | Interest rate swaps          
Derivative Instruments, Gain (Loss) [Line Items]          
Notional amount 100,000   100,000    
Fair Value $ 1,129   $ 413