Income Taxes (Schedule Of Income Tax Expense (Benefit) Computed By Applying The U.S. Federal Income Tax Rate) (Details) - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2015	Aug. 14, 2015	Dec. 31, 2016	Dec. 31, 2014
Predecessor [Member]
Tax Credit Carryforward [Line Items]
Tax at statutory U.S. federal rate	$ (7,610)	$ (33,431)		$ (55,409)
U.S. valuation allowance, net	7,355	21,532		26,175
State taxes, net of federal tax benefit	(697)	(2,005)		(4,387)
U.S. tax return adjustments to estimated taxes	0	0		(368)
Resolution of uncertain tax positions	64	71		(513)
Adjustment for foreign income taxed at different rates	7,120	11,136		10,408
U.S. tax credits	0	0		(1,000)
Non-U.S. tax exemptions, holidays and credits	228	(691)		0
Goodwill impairment	0	8,026		17,161
Capital loss expiration	0	0		2,422
Investment in subsidiary impairment deduction	0	0		0
Other	422	1,814		(279)
Total income tax (benefit) expense	6,882	$ 6,452	$ (7,552)	$ (5,790)
Successor [Member]
Tax Credit Carryforward [Line Items]
Tax at statutory U.S. federal rate			(40,747)
U.S. valuation allowance, net			35,091
State taxes, net of federal tax benefit			(2,324)
U.S. tax return adjustments to estimated taxes			0
Resolution of uncertain tax positions			(513)
Adjustment for foreign income taxed at different rates			12,738
U.S. tax credits			0
Non-U.S. tax exemptions, holidays and credits			(175)
Goodwill impairment			0
Capital loss expiration			0
Investment in subsidiary impairment deduction			(10,111)
Other			(1,511)
Total income tax (benefit) expense	$ 6,882		$ (7,552)