Quarterly report pursuant to Section 13 or 15(d)

Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Details)

v3.20.2
Accumulated Other Comprehensive Income (Loss) - Summary of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance $ 744,702,000 $ 875,725,000 $ 944,764,000 $ 823,116,000
Other comprehensive income (loss) before reclassifications     856,000  
Amounts reclassified out of accumulated other comprehensive income (loss)     (1,358,000)  
Other comprehensive income (loss) 25,000 (679,000) (502,000) (3,952,000)
Ending balance 774,102,000 902,425,000 774,102,000 902,425,000
Other comprehensive income (loss) before reclassifications, tax expense     221,000  
Amounts reclassified out of accumulated other comprehensive income (loss), tax expense     (555,000)  
Gains and Losses on Cash Flow Hedges        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (1,326,000)  
Other comprehensive income (loss) before reclassifications     856,000  
Amounts reclassified out of accumulated other comprehensive income (loss)     (1,358,000)  
Other comprehensive income (loss)     (502,000)  
Ending balance (1,828,000)   (1,828,000)  
Defined Benefit Pension Plan        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance     (736,000)  
Other comprehensive income (loss) before reclassifications     0  
Amounts reclassified out of accumulated other comprehensive income (loss)     0  
Other comprehensive income (loss)     0  
Ending balance (736,000)   (736,000)  
Total Accumulated Other Comprehensive Income (Loss)        
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]        
Beginning balance (2,589,000) 960,000 (2,062,000) 4,233,000
Other comprehensive income (loss) 25,000 (679,000) (502,000) (3,952,000)
Ending balance $ (2,564,000) $ 281,000 $ (2,564,000) $ 281,000