DIVIDENDS, SHARE REPURCHASES, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($)		3 Months Ended		6 Months Ended
	Nov. 01, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Oct. 31, 2016
Dividends, Share Repurchases and Earnings Per Share [Line Items]
Cash dividends declared per common share		$ 0.07	$ 0.34	$ 0.14	$ 0.68
Treasury Stock, Shares, Acquired		0		0
Loss attributable to common stockholders - basic		$ (29,797,000)	$ (42,329,000)	$ (70,569,000)	$ (51,887,000)
Interest expense on assumed conversion of 3% Convertible Notes, net of tax		0	0	0	0
Income (loss) available to common stockholders - diluted		$ (29,797,000)	$ (42,329,000)	$ (70,569,000)	$ (51,887,000)
Weighted average number of common shares outstanding - basic		35,070,047	34,921,891	35,012,014	34,876,010
Assumed conversion of 3% Convertible Senior Noted outstanding during the period		0	0	0	0
Net effect of dilutive stock options, restricted stock units and restricted stock awards based on the treasury stock method		0	0	0	0
Weighted average number of common shares outstanding - diluted		35,070,047	34,921,891	35,012,014	34,876,010
Basic loss per share		$ (0.85)	$ (1.21)	$ (2.02)	$ (1.49)
Diluted loss per share		$ (0.85)	$ (1.21)	$ (2.02)	$ (1.49)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive loss - beginning balance				$ (289,819,000)
Accumulated other comprehensive loss - ending balance		$ (307,358,000)		(307,358,000)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive loss - beginning balance				(289,819,000)
Other comprehensive income before reclassification				(17,539,000)
Reclassified from accumulated other comprehensive income				0
Net current period other comprehensive income				(17,539,000)
Foreign exchange rate impact		0		0
Accumulated other comprehensive loss - ending balance		(307,358,000)		(307,358,000)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive loss - beginning balance				(67,365,000)
Other comprehensive income before reclassification				(17,539,000)
Reclassified from accumulated other comprehensive income				0
Net current period other comprehensive income				(17,539,000)
Foreign exchange rate impact		(23,941,000)		(23,941,000)
Accumulated other comprehensive loss - ending balance		(108,845,000)		(108,845,000)
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Defined Benefit Plans Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated other comprehensive loss - beginning balance				(222,454,000)
Other comprehensive income before reclassification				0
Reclassified from accumulated other comprehensive income				0
Net current period other comprehensive income				0
Foreign exchange rate impact		23,941,000		23,941,000
Accumulated other comprehensive loss - ending balance		$ (198,513,000)		$ (198,513,000)
Convertible Debt
Dividends, Share Repurchases and Earnings Per Share [Line Items]
Repayment of debt					$ 115,000,000
Debt instrument, interest rate, stated percentage			3.00%		3.00%
Per principal amount of convertible debt					$ 1,000
Subsequent event
Dividends, Share Repurchases and Earnings Per Share [Line Items]
Cash dividends declared per common share	$ 0.07
Remaining authorized repurchase amount						$ 150,000,000
Stock Options
Dividends, Share Repurchases and Earnings Per Share [Line Items]
Outstanding - anti-dilutive		1,950,289	1,292,639	1,522,304	592,067
Weighted average exercise price - anti-dilutive		$ 30.07	$ 61.87	$ 36.23	$ 68.99
Restricted Stock Awards
Dividends, Share Repurchases and Earnings Per Share [Line Items]
Outstanding - anti-dilutive		442,217	348,182	577,737	296,205
Weighted average exercise price - anti-dilutive		$ 26.81	$ 49.79	$ 24.59	$ 49.22