XML 46 R35.htm IDEA: XBRL DOCUMENT v3.8.0.1
Post Retirement Benefits (Details) - USD ($)
 3 Months Ended 6 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
Pension, health and life insurance expense:          
Multi-employer plan contributions $ 153,000 $ 168,000   $ 479,000 $ 538,000
Defined contribution plan contributions 162,000 165,000   557,000 578,000
Total pension expense 315,000 333,000   1,036,000 1,116,000
Interest cost 75,000 81,000   224,000 243,000
Amortization of prior service costs (124,000) (124,000)   (372,000) (372,000)
Amortization of net loss 37,000 38,000   112,000 116,000
Net periodic benefit cost (12,000) (5,000)   (36,000) (13,000)
Total post retirement benefits expense 303,000 $ 328,000   1,000,000 $ 1,103,000
Payments to pension plans       1,209,000  
Payments for post retirement healthcare and life insurance       252,000  
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Accrued Expected Pension Plan Payments $ 53,000     $ 53,000  
Scenario, Forecast [Member]          
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]          
Expected payments to pension plans     $ 203,000    
Expected future payments for other post retirement benefits     $ 132,000