Annual report pursuant to Section 13 and 15(d)

Multiemployer Pension Plans (Details Textual)

v3.7.0.1
Multiemployer Pension Plans (Details Textual)
$ in Millions
5 Months Ended 7 Months Ended 12 Months Ended
Dec. 31, 2016
USD ($)
Jul. 19, 2016
USD ($)
Dec. 31, 2016
Dec. 31, 2015
USD ($)
Multiemployer Plans Contribution And Pension Protection Act Zone Status Description     MEPPS in which the Companys contributions exceeded $100 thousand in 2016 or 2015. Additionally, this table also lists all MEPPs to which the Company contributed in excess of $40 thousand in 2016 or 2015 for MEPPs in either the critical or endangered status. Additionally, this table also lists the PPA Zone Status for MEPPS as the critical status (red zone-less than 65% funded), the endangered status (yellow-less than 80% funded) or neither critical or endangered status (green-greater than 80% funded).  
Multiemployer Plan, Period Contributions $ 16.1 $ 16.7   $ 26.5
Multiemployer Plans Surcharge Percentage     53.60%  
Multiemployer Plans, Pension [Member]        
Multiemployer Plans Number Of Employer 50   50  
Multiemployer Plans, Pension [Member] | Pension Protection Act [Member]        
Multiemployer Plans Surcharge Percentage     5.00%  
Multiemployer Plans, Pension [Member] | Retirement Benefit Plan [Member]        
Multiemployer Plans Surcharge Percentage     10.00%