BANKRUPTCY AND RELATED MATTERS Debtor in Possession Unaudited Condensed Combined Statement of Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Cash flows from operating activities:
Net loss	$ (162,919)	$ (143,430)	$ (332,007)	$ (175,227)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	31,303	30,489	62,642	61,430
Deferred income taxes			(45,252)	(27,651)
Loss on impairment	62,101	117,220	62,101	117,220
Write off of deferred financing fees			4,038	0
Discount amortization on long-term debt			1,520	3,101
Reorganization expense, other			119,333	0
Gain (loss) on disposal of assets	230	1,293	4,017	2,971
Deferral of lease payments			285	2,841
Stock-based compensation	700	2,000	1,526	3,714
Increase (decrease) in cash resulting from changes in:
Accounts receivable			(20,805)	6,792
Inventories			(201)	(3,785)
Prepaid expenses and other assets			(2,675)	2,980
Accounts payable			12,745	7,651
Accrued liabilities			32,890	(26,703)
Other liabilities and deferred credits			(13,841)	(5,048)
Net cash used in operating activities			(57,165)	(26,902)
Cash flows from investing activities:
Capital expenditures	(18,511)	(8,407)	(25,950)	(17,302)
Proceeds from asset dispositions	1,799	688	5,003	8,462
Net cash used in investing activities			(43,405)	(8,840)
Cash flows from financing activities:
Proceeds from borrowings			225,585	387
Debt issuance costs			(14,130)	(2,554)
Repayment of debt			(99,228)	(29,970)
Partial prepayment of put/call obligation			(1,323)	(27)
Net cash provided by (used in) financing activities			110,904	(31,418)
Effect of exchange rate changes on cash, cash equivalents and restricted cash			4,406	(5,272)
Net decrease in cash, cash equivalents and restricted cash			14,740	(72,432)
Cash and cash equivalents at beginning of period			178,055	380,223
Cash, cash equivalents and restricted cash at end of period	192,795	$ 307,791	192,795	$ 307,791
Debtor In Possession [Member]
Cash flows from operating activities:
Net loss	(140,659)		(253,827)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	31,319		62,608
Deferred income taxes			(45,283)
Loss on impairment	42,022		42,022
Write off of deferred financing fees			2,726
Discount amortization on long-term debt			1,520
Reorganization expense, other			109,259
Gain (loss) on disposal of assets	375		(4,200)
Deferral of lease payments			285
Stock-based compensation			1,159
Increase (decrease) in cash resulting from changes in:
Accounts receivable			2,156
Inventories			(328)
Prepaid expenses and other assets			(4,507)
Accounts payable			24,130
Accrued liabilities			39,415
Other liabilities and deferred credits			(80,800)
Net cash used in operating activities			(103,665)
Cash flows from investing activities:
Capital expenditures			(4,472)
Proceeds from asset dispositions			4,935
Net cash used in investing activities			463
Cash flows from financing activities:
Proceeds from borrowings			150,000
Debt issuance costs			(6,696)
Repayment of debt			(94,573)
Partial prepayment of put/call obligation			(37)
Net cash provided by (used in) financing activities			48,694
Effect of exchange rate changes on cash, cash equivalents and restricted cash			(549)
Net decrease in cash, cash equivalents and restricted cash			(55,057)
Cash and cash equivalents at beginning of period			94,184
Cash, cash equivalents and restricted cash at end of period	$ 39,127		$ 39,127

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of noncash expense for share-based payment arrangement.

+ References

+ Details

Name:	us-gaap_ShareBasedCompensation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Write-off of amounts previously capitalized as debt issuance cost in an extinguishment of debt.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.8)
-URI http://asc.fasb.org/extlink&oid=116634182&loc=SL114868664-224227

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