Quarterly report pursuant to Section 13 or 15(d)

Changes in Accumulated Other Comprehensive Loss by Component - Rollforward (Details)

v3.21.2
Changes in Accumulated Other Comprehensive Loss by Component - Rollforward (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Changes to accumulated other comprehensive loss by component    
Balance at the beginning of the period $ (5,495) $ (2,814)
Other comprehensive gain (loss) before reclassifications (21) (4,612)
Amounts reclassified from accumulated other comprehensive loss 1,445 800
Balance at the end of the period (4,071) (6,626)
Unrealized Net Loss on Interest Rate Swap    
Changes to accumulated other comprehensive loss by component    
Balance at the beginning of the period (7,608) (5,023)
Other comprehensive gain (loss) before reclassifications (21) (4,612)
Amounts reclassified from accumulated other comprehensive loss 1,560 914
Balance at the end of the period (6,069) (8,721)
Other Postretirement Benefit Liability    
Changes to accumulated other comprehensive loss by component    
Balance at the beginning of the period 2,113 2,209
Amounts reclassified from accumulated other comprehensive loss (115) (114)
Balance at the end of the period $ 1,998 $ 2,095