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Other Comprehensive Income (Loss) - Derivative Instruments Included in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ 212,508 $ 191,542
Other comprehensive gain (loss) $ (1,186) $ 597 (3,991) 7,042
Ending balance 219,440 208,489 219,440 208,489
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (6,187) 75 97 1,438
Unrealized gains (losses) on cash flow hedging derivatives arising during the period 490 (430) (7,465) (2,156)
Related deferred taxes (103) 90 1,568 453
Other comprehensive gain (loss) 387 (340) (5,897) (1,703)
Ending balance $ (5,800) $ (265) $ (5,800) $ (265)