Quarterly report pursuant to Section 13 or 15(d)

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

v3.5.0.2
Changes in Accumulated Other Comprehensive Loss by Component - Rollforward (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Changes to accumulated other comprehensive loss by component    
Balance at the beginning of the period $ (6,183) $ (6,028)
Other comprehensive earning (loss) before reclassifications (1,834) (28)
Amounts reclassified from accumulated other comprehensive loss 307 295
Balance at the end of the period (7,710) (5,761)
Unrealized Net Loss on Interest Rate Swap    
Changes to accumulated other comprehensive loss by component    
Balance at the beginning of the period (937)  
Other comprehensive earning (loss) before reclassifications (1,834) (28)
Amounts reclassified from accumulated other comprehensive loss 121  
Balance at the end of the period (2,650) (28)
Other Postretirement Benefit Liability    
Changes to accumulated other comprehensive loss by component    
Balance at the beginning of the period 1,048 807
Amounts reclassified from accumulated other comprehensive loss (39) (21)
Balance at the end of the period 1,009 786
Pension Liability    
Changes to accumulated other comprehensive loss by component    
Balance at the beginning of the period (6,294) (6,835)
Amounts reclassified from accumulated other comprehensive loss 225 316
Balance at the end of the period $ (6,069) $ (6,519)