Quarterly report pursuant to Section 13 or 15(d)

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

v3.19.1
Changes in Accumulated Other Comprehensive Loss by Component - Reclassifications (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Amounts reclassified from accumulated other comprehensive loss:    
Interest expense, net $ 4,150 $ 3,945
Tax expense (benefit) (463) (1,262)
Reclassification net of tax 293 1,850
Interest rate swap | Amount reclassified from accumulated other comprehensive income    
Amounts reclassified from accumulated other comprehensive loss:    
Interest expense, net   29
Tax expense (benefit)   (8)
Reclassification net of tax   21
Other Postretirement Benefit Liability | Amount reclassified from accumulated other comprehensive income    
Amounts reclassified from accumulated other comprehensive loss:    
Actuarial (gains) losses (78) (52)
Tax expense (benefit) 20 14
Reclassification net of tax (58) (38)
Pension Liability | Amount reclassified from accumulated other comprehensive income    
Amounts reclassified from accumulated other comprehensive loss:    
Actuarial (gains) losses 149 176
Tax expense (benefit) (39) (46)
Reclassification net of tax 110 $ 130
Unrealized Net Loss on Interest Rate Swap | Interest rate swap    
Amounts reclassified from accumulated other comprehensive loss:    
Interest expense, net 49  
Tax expense (benefit) (13)  
Reclassification net of tax $ 36