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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Unrealized gains (losses) on available-for-sale securities, tax	$ 0		$ 0
Change in loss on derivative contract, tax	0		0
Change in supplemental executive retirement plan liability, tax	0		0
Change in Pension Plan minimum liability, tax	0		0
Change in Other Benefit Plan minimum liability, tax	$ 0		$ 0
Predecessor
Unrealized gains (losses) on available-for-sale securities, tax		$ 0		$ 61
Change in loss on derivative contract, tax		0		823
Change in supplemental executive retirement plan liability, tax		0		(927)
Change in Pension Plan minimum liability, tax		0		215
Change in Other Benefit Plan minimum liability, tax		$ 0		$ (2,046)

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