SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS (Details 3) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Consolidating Financial Statements, Captions
Contract with Customer, Asset, Net, Current	$ 572,543		$ 572,543		$ 37,573
Net Income (Loss) Attributable to Parent	(30,945)	$ (113,252)	(122,155)	$ (120,561)
Adjustments to reconcile net income to net cash provided by (used in) operating activities			(70,961)	(77,718)
Net cash provided by (used in) operating activities			(193,116)	(198,279)
Capital expenditures	(10,570)	(9,157)	(34,824)	(31,932)
Proceeds from sale of assets			41,417	68,412
Net cash used in investing activities			6,593	36,480
Net increase in revolving credit facility			(218,066)	(20,000)
Proceeds from issuance of long-term debt and capital leases			45,000	531,500
Retirements and repayments of debt			73,011	369,261
Payments of Financing Costs			1,941	17,729
Dividends paid			5,975	5,956
Repurchase of restricted shares for minimum tax obligation			(645)	(369)
Intercompany financing and advances			0	0
Net cash (used in) provided by financing activities			181,494	158,185
Effect of exchange rate changes on cash			(2,126)	(1,631)
Net change in cash and cash equivalents			(7,155)	(5,245)
Cash and cash equivalents	28,664	64,388	28,664	64,388	35,819	$ 69,633
Consolidation, Eliminations [Member]
Consolidating Financial Statements, Captions
Contract with Customer, Asset, Net, Current	0		0		0
Net Income (Loss) Attributable to Parent	0	0	0	0
Adjustments to reconcile net income to net cash provided by (used in) operating activities			17,879	42,707
Net cash provided by (used in) operating activities			17,879	42,707
Capital expenditures			0	0
Proceeds from sale of assets			0	0
Net cash used in investing activities			0	0
Net increase in revolving credit facility			0	0
Proceeds from issuance of long-term debt and capital leases			0	0
Retirements and repayments of debt			0	0
Payments of Financing Costs			0	0
Dividends paid			0	0
Repurchase of restricted shares for minimum tax obligation			0	0
Intercompany financing and advances			(17,879)	(42,707)
Net cash (used in) provided by financing activities			(17,879)	(42,707)
Effect of exchange rate changes on cash			0	0
Net change in cash and cash equivalents			0	0
Cash and cash equivalents	0	0	0	0	0	0
Parent
Consolidating Financial Statements, Captions
Contract with Customer, Asset, Net, Current	0		0		0
Net Income (Loss) Attributable to Parent	9,821	49,136	(50,866)	30,316
Adjustments to reconcile net income to net cash provided by (used in) operating activities			38,356	(54,460)
Net cash provided by (used in) operating activities			(12,510)	(24,144)
Capital expenditures			(628)	(2,314)
Proceeds from sale of assets			0	0
Net cash used in investing activities			(628)	(2,314)
Net increase in revolving credit facility			(218,066)	(20,000)
Proceeds from issuance of long-term debt and capital leases			0	500,000
Retirements and repayments of debt			1,091	314,628
Payments of Financing Costs			1,941	17,729
Dividends paid			5,975	5,956
Repurchase of restricted shares for minimum tax obligation			(645)	(369)
Intercompany financing and advances			(195,320)	(162,174)
Net cash (used in) provided by financing activities			13,094	19,144
Effect of exchange rate changes on cash			0	0
Net change in cash and cash equivalents			(44)	(7,314)
Cash and cash equivalents	0	12,628	0	12,628	44	19,942
Guarantor Subsidiaries [Member]
Consolidating Financial Statements, Captions
Contract with Customer, Asset, Net, Current	561,368		561,368		37,573
Net Income (Loss) Attributable to Parent	(44,877)	(114,216)	(83,368)	(99,395)
Adjustments to reconcile net income to net cash provided by (used in) operating activities			(154,793)	(139,525)
Net cash provided by (used in) operating activities			(238,161)	(238,920)
Capital expenditures			(30,398)	(25,507)
Proceeds from sale of assets			40,235	68,009
Net cash used in investing activities			9,837	42,502
Net increase in revolving credit facility			0	0
Proceeds from issuance of long-term debt and capital leases			0	0
Retirements and repayments of debt			15,120	19,333
Payments of Financing Costs			0	0
Dividends paid			0	0
Repurchase of restricted shares for minimum tax obligation				0
Intercompany financing and advances			243,505	200,010
Net cash (used in) provided by financing activities			228,385	180,677
Effect of exchange rate changes on cash			0	0
Net change in cash and cash equivalents			61	(15,741)
Cash and cash equivalents	61	8,396	61	8,396	0	24,137
Non-Guarantor Subsidiaries
Consolidating Financial Statements, Captions
Contract with Customer, Asset, Net, Current	11,175		11,175		0
Net Income (Loss) Attributable to Parent	4,111	(48,172)	12,079	(51,482)
Adjustments to reconcile net income to net cash provided by (used in) operating activities			27,597	73,560
Net cash provided by (used in) operating activities			39,676	22,078
Capital expenditures			(3,798)	(4,111)
Proceeds from sale of assets			1,182	403
Net cash used in investing activities			(2,616)	(3,708)
Net increase in revolving credit facility			0	0
Proceeds from issuance of long-term debt and capital leases			45,000	31,500
Retirements and repayments of debt			56,800	35,300
Payments of Financing Costs			0	0
Dividends paid			0	0
Repurchase of restricted shares for minimum tax obligation				0
Intercompany financing and advances			(30,306)	4,871
Net cash (used in) provided by financing activities			(42,106)	1,071
Effect of exchange rate changes on cash			(2,126)	(1,631)
Net change in cash and cash equivalents			(7,172)	17,810
Cash and cash equivalents	$ 28,603	$ 43,364	$ 28,603	$ 43,364	$ 35,775	$ 25,554