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Other Comprehensive Income (Loss) - Derivative Instruments Included in Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ 212,508 $ 191,542
Other comprehensive gain (loss) $ (2,176) $ 3,395 (2,805) 6,445
Ending balance 216,584 204,593 216,584 204,593
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (4,773) 973 97 1,438
Unrealized losses on cash flow hedging derivatives arising during the period (1,790) (1,136) (7,955) (1,725)
Related deferred taxes 376 238 1,671 362
Other comprehensive gain (loss) (1,414) (898) (6,284) (1,363)
Ending balance $ (6,187) $ 75 $ (6,187) $ 75