CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	4 Months Ended	5 Months Ended	12 Months Ended
	Jul. 31, 2017	Dec. 31, 2017	Dec. 31, 2018	Mar. 31, 2017
Net loss		$ (38,726)	$ (171,771)
Other comprehensive income (loss):
Unrealized gains (losses) on available for sale securities, net of tax of $0, $0, $0 and $61, respectively		256	(256)
Change in supplemental executive retirement plan pension liability, net of tax of $0, $0, $0 and ($927), respectively		(1,582)	2,214
Change in pension plan minimum liability, net of tax of $0, $0, $0 and $215, respectively		(357)	1,919
Change in other benefit plan minimum liability, net of tax of $0, $0, $0 and ($2,046), respectively		1,536	(1,536)
Total comprehensive loss		$ (38,873)	$ (169,430)
Predecessor
Net loss	$ (1,646,909)			$ (650,011)
Other comprehensive income (loss):
Unrealized gains (losses) on available for sale securities, net of tax of $0, $0, $0 and $61, respectively	163			113
Change in loss on derivative contract, net of tax of $0, $0, $0 and $823, respectively				1,530
Change in supplemental executive retirement plan pension liability, net of tax of $0, $0, $0 and ($927), respectively	(536)			(1,721)
Change in pension plan minimum liability, net of tax of $0, $0, $0 and $215, respectively	(594)			399
Change in other benefit plan minimum liability, net of tax of $0, $0, $0 and ($2,046), respectively	(1,468)			(3,799)
Total comprehensive loss	$ (1,649,344)			$ (653,489)