Pension Plan and Employee Benefits, 401 (K) Plans (Details) - USD ($) $ in Thousands		3 Months Ended			6 Months Ended
	Apr. 12, 2016	Jun. 30, 2016	Apr. 12, 2016	Jun. 30, 2015	Jun. 30, 2015
Successor [Member]
401(k) Plan [Abstract]
401(k) Plan expense		$ 1,110
Successor [Member] | Other Subsidiaries [Member]
401(k) Plan [Abstract]
401(k) Plan expense		$ 200
Predecessor [Member]
401(k) Plan [Abstract]
401(k) Plan expense	$ 219		$ 1,593	$ 1,268	$ 2,693
Predecessor [Member] | Other Subsidiaries [Member]
401(k) Plan [Abstract]
401(k) Plan expense	$ 100		$ 300	$ 200	$ 500