SUPPLEMENTAL CONDENSED CONSOLIDATING FINANCIAL INFORMATION - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
Jun. 30, 2018	Jun. 30, 2017
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	$ (44,119)	$ (51,179)
Capital expenditures	(8,895)	(12,553)
Proceeds from asset dispositions	7,774	41,975
Net cash provided by (used in) investing activities	(1,121)	29,422
Proceeds from borrowings	387	69,018
Debt issuance costs	(2,378)	(493)
Repayment of debt	(14,194)	(66,947)
Dividends paid	0	(2,465)
Increases (decreases) in cash related to intercompany advances and debt	0	0
Partial prepayment of put/call obligation	(14)	(12)
Issuance of common stock	2,830	0
Repurchases for tax withholdings on vesting of equity awards	(1,484)	(274)
Net cash used in financing activities	(14,853)	(1,173)
Effect of exchange rate changes on cash and cash equivalents	(3,580)	5,153
Net decrease in cash and cash equivalents	(63,673)	(17,777)
Cash and cash equivalents at beginning of period	380,223	96,656
Cash and cash equivalents at end of period	316,550	78,879
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	0	0
Capital expenditures	0	0
Proceeds from asset dispositions	0	0
Net cash provided by (used in) investing activities	0	0
Proceeds from borrowings	0	0
Debt issuance costs	0	0
Repayment of debt	0	0
Dividends paid	0	0
Increases (decreases) in cash related to intercompany advances and debt	0	0
Partial prepayment of put/call obligation	0	0
Issuance of common stock	0
Repurchases for tax withholdings on vesting of equity awards	0	0
Net cash used in financing activities	0	0
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Parent Company Only
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(32,865)	(37,229)
Capital expenditures	(654)	(4,036)
Proceeds from asset dispositions	0	0
Net cash provided by (used in) investing activities	(654)	(4,036)
Proceeds from borrowings	0	68,800
Debt issuance costs	(421)	0
Repayment of debt	0	(42,150)
Dividends paid	162,941	(2,465)
Increases (decreases) in cash related to intercompany advances and debt	(162,519)	19,370
Partial prepayment of put/call obligation	(14)	(12)
Issuance of common stock	2,830
Repurchases for tax withholdings on vesting of equity awards	(1,484)	(274)
Net cash used in financing activities	1,333	43,269
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	(32,186)	2,004
Cash and cash equivalents at beginning of period	277,176	3,382
Cash and cash equivalents at end of period	244,990	5,386
Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	11,992	(7,228)
Capital expenditures	(1,453)	(3,070)
Proceeds from asset dispositions	7,432	2,473
Net cash provided by (used in) investing activities	5,979	(597)
Proceeds from borrowings	0	0
Debt issuance costs	(32)	(466)
Repayment of debt	(5,262)	(5,013)
Dividends paid	1,649	0
Increases (decreases) in cash related to intercompany advances and debt	(21,716)	14,192
Partial prepayment of put/call obligation	0	0
Issuance of common stock	0
Repurchases for tax withholdings on vesting of equity awards	0	0
Net cash used in financing activities	(25,361)	8,713
Effect of exchange rate changes on cash and cash equivalents	0	0
Net decrease in cash and cash equivalents	(7,390)	888
Cash and cash equivalents at beginning of period	8,904	299
Cash and cash equivalents at end of period	1,514	1,187
Non- Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net cash provided by (used in) operating activities	(23,246)	(6,722)
Capital expenditures	(6,788)	(5,447)
Proceeds from asset dispositions	342	39,502
Net cash provided by (used in) investing activities	(6,446)	34,055
Proceeds from borrowings	387	218
Debt issuance costs	(1,925)	(27)
Repayment of debt	(8,932)	(19,784)
Dividends paid	(164,590)	0
Increases (decreases) in cash related to intercompany advances and debt	184,235	(33,562)
Partial prepayment of put/call obligation	0	0
Issuance of common stock	0
Repurchases for tax withholdings on vesting of equity awards	0	0
Net cash used in financing activities	9,175	(53,155)
Effect of exchange rate changes on cash and cash equivalents	(3,580)	5,153
Net decrease in cash and cash equivalents	(24,097)	(20,669)
Cash and cash equivalents at beginning of period	94,143	92,975
Cash and cash equivalents at end of period	$ 70,046	$ 72,306

Increases (decreases) in cash related to intercompany advances and debt.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

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Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award.

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The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale.

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