SELECTED CONSOLIDATING FINANCIAL STATEMENTS OF PARENT, GUARANTORS AND NON-GUARANTORS (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Consolidating Financial Statements, Captions
Revenues	$ 807,895	$ 775,246	$ 2,495,903	$ 2,302,091
Cost of Goods and Services Sold	713,274	630,870	2,207,962	1,877,179
Selling, General and Administrative Expense	71,823	62,886	223,031	216,479
Depreciation and amortization	37,404	39,320	114,349	119,318
Asset Impairment Charges	0	190,227	0	190,227
Restructuring Charges	2,327	6,149	18,206	33,751
Gain (Loss) on Disposition of Business	0	0	17,837	20,371
Costs and Expenses	824,828	929,452	2,581,385	2,457,325
Operating Income (Loss)	(16,933)	(154,206)	(85,482)	(155,234)
Intercompany Interest and Charges	0	0	0	0
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(16,520)	(34,502)	(49,581)	(72,787)
Interest expense and other	29,309	25,836	83,515	72,229
Income (loss) from continuing operations before income taxes	(29,722)	(145,540)	(119,416)	(154,676)
Income tax expense (benefit)	1,223	(32,288)	2,739	(34,115)
Net Income (Loss) Attributable to Parent	(30,945)	(113,252)	(122,155)	(120,561)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(8,404)	4,798	(22,759)	21,554
Total comprehensive income	(39,349)	(108,454)	(144,914)	(99,007)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment		0		0
Consolidation, Eliminations [Member]
Consolidating Financial Statements, Captions
Revenues	(19,386)	(18,989)	(59,837)	(60,904)
Cost of Goods and Services Sold	(19,386)	(18,989)	(59,837)	(60,904)
Selling, General and Administrative Expense	0	0	0	0
Depreciation and amortization	0	0	0	0
Restructuring Charges	0	0	0	0
Gain (Loss) on Disposition of Business	0	0	0	0
Costs and Expenses	(19,386)	(18,989)	(59,837)	(60,904)
Operating Income (Loss)	0	0	0	0
Intercompany Interest and Charges	0	0	0	0
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	0	0	0	0
Interest expense and other	0	0	0	0
Income (loss) from continuing operations before income taxes	0	0	0	0
Income tax expense (benefit)	0	0	0	0
Net Income (Loss) Attributable to Parent	0	0	0	0
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	0	0	0	0
Total comprehensive income	0	0	0	0
Parent
Consolidating Financial Statements, Captions
Revenues	0	0	0	0
Cost of Goods and Services Sold	0	0	0	0
Selling, General and Administrative Expense	17,720	27,914	57,210	69,820
Depreciation and amortization	744	441	2,200	1,050
Restructuring Charges	0	2,382	2,766	17,089
Gain (Loss) on Disposition of Business	0	0	16,890	20,371
Costs and Expenses	18,464	30,737	79,066	108,330
Operating Income (Loss)	(18,464)	(30,737)	(79,066)	(108,330)
Intercompany Interest and Charges	(39,513)	(39,386)	(118,352)	(122,339)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	0	(15,099)	0	(14,576)
Interest expense and other	25,476	23,686	73,855	63,092
Income (loss) from continuing operations before income taxes	(4,427)	62	(34,569)	(34,507)
Income tax expense (benefit)	(14,248)	(49,074)	16,297	(64,823)
Net Income (Loss) Attributable to Parent	9,821	49,136	(50,866)	30,316
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(279)	(613)	(349)	(3,012)
Total comprehensive income	9,542	48,523	(51,215)	27,304
Guarantor Subsidiaries [Member]
Consolidating Financial Statements, Captions
Revenues	735,753	705,792	2,286,932	2,096,894
Cost of Goods and Services Sold	660,002	581,065	2,052,427	1,721,734
Selling, General and Administrative Expense	46,033	28,070	140,892	120,551
Depreciation and amortization	32,640	34,606	99,302	105,781
Restructuring Charges	2,327	2,637	15,440	13,883
Gain (Loss) on Disposition of Business	0	0	947	0
Costs and Expenses	741,002	781,391	2,309,008	2,096,962
Operating Income (Loss)	(5,249)	(75,599)	(22,076)	(68)
Intercompany Interest and Charges	37,484	38,877	112,281	116,076
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(16,188)	(18,771)	(48,562)	(56,344)
Interest expense and other	4,007	2,796	13,334	8,181
Income (loss) from continuing operations before income taxes	(30,552)	(98,501)	(99,129)	(67,981)
Income tax expense (benefit)	14,325	15,715	(15,761)	31,414
Net Income (Loss) Attributable to Parent	(44,877)	(114,216)	(83,368)	(99,395)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(174)	7,235	(609)	5,064
Total comprehensive income	(45,051)	(106,981)	(83,977)	(94,331)
Non-Guarantor Subsidiaries
Consolidating Financial Statements, Captions
Revenues	91,528	88,443	268,808	266,101
Cost of Goods and Services Sold	72,658	68,794	215,372	216,349
Selling, General and Administrative Expense	8,070	6,902	24,929	26,108
Depreciation and amortization	4,020	4,273	12,847	12,487
Restructuring Charges	0	1,130	0	2,779
Gain (Loss) on Disposition of Business	0	0	0	0
Costs and Expenses	84,748	136,313	253,148	312,937
Operating Income (Loss)	6,780	(47,870)	15,660	(46,836)
Intercompany Interest and Charges	2,029	509	6,071	6,263
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component	(332)	(632)	(1,019)	(1,867)
Interest expense and other	(174)	(646)	(3,674)	956
Income (loss) from continuing operations before income taxes	5,257	(47,101)	14,282	(52,188)
Income tax expense (benefit)	1,146	1,071	2,203	(706)
Net Income (Loss) Attributable to Parent	4,111	(48,172)	12,079	(51,482)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(7,951)	(1,824)	(21,801)	19,502
Total comprehensive income	(3,840)	(49,996)	(9,722)	(31,980)
Pension Plan [Member]
Consolidating Financial Statements, Captions
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement and Curtailment	$ 0	$ 0	$ 0	$ 523