DIVIDENDS, SHARE REPURCHASES, EARNINGS PER SHARE AND ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Mar. 31, 2015	Nov. 06, 2014	Jan. 30, 2015
Dividends, Share Repurchases and Earnings Per Share [Line Items]
Cash dividends declared per common share	$ 0.32	$ 0.25	$ 0.96	$ 0.75
Payments for repurchase of common stock	$ 37,400,000		$ 80,831,000	$ 16,544,000
Treasury Stock, Shares, Acquired	565,622		1,160,940
Stock Repurchase Program, Authorized Amount						150,000,000
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Income available to common stockholders - basic	(968,000)	18,927,000	69,223,000	156,419,000
Interest expense on assumed conversion of 3% Convertible Notes, net of tax	0	0	0	0
Income available to common stockholders - diluted	(968,000)	18,927,000	69,223,000	156,419,000
Weighted average number of common shares outstanding - basic	35,039,875	36,477,191	35,332,925	36,175,207
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	248,727	292,603	324,194	398,750
Weighted average number of common shares outstanding - diluted	35,288,602	36,769,794	35,657,119	36,573,957
Basic earnings per share	$ (0.03)	$ 0.52	$ 1.96	$ 4.32
Diluted earnings per share	$ (0.03)	$ 0.51	$ 1.94	$ 4.28
Debt Instrument Convertible Terms Of Conversion Feature	the base conversion price of the notes was approximately $74.05, based on the base conversion rate of 13.5048 shares of Common Stock per $1,000 principal amount of convertible notes (subject to adjustment in certain circumstances, including the payment of dividends). In general, upon conversion of a note, the holder will receive cash equal to the principal amount of the note and Common Stock to the extent of the note’s conversion value in excess of such principal amount. In addition, if at the time of conversion the applicable price of our Common Stock exceeds the base conversion price, holders will receive up to an additional 8.7781 shares of our Common Stock per $1,000 principal amount of notes, as determined pursuant to a specified formula.
Debt Instrument, Convertible, Conversion Price	$ 73.07		$ 73.07
Per Principal Amount Of Convertible Debt			1,000
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss) - Beginning Balance			(156,506,000)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(28,276,000)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Other Comprehensive Income (Loss), Net of Tax			(28,276,000)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	0		0
Accumulated Other Comprehensive Income (Loss) - Ending Balance	(184,782,000)		(184,782,000)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss) - Beginning Balance			57,812,000
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			(28,276,000)
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Other Comprehensive Income (Loss), Net of Tax			(28,276,000)
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	(13,154,000)		(13,154,000)
Accumulated Other Comprehensive Income (Loss) - Ending Balance	16,382,000		16,382,000
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income (Loss) - Beginning Balance			(214,318,000)
Other Comprehensive Income (Loss), before Reclassifications, Net of Tax			0
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax			0
Other Comprehensive Income (Loss), Net of Tax			0
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax	13,154,000		13,154,000
Accumulated Other Comprehensive Income (Loss) - Ending Balance	(201,164,000)		(201,164,000)
Base Conversion [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Ratio			13.6849
Excess Conversion [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Debt Instrument, Convertible, Conversion Ratio			8.8952
Stock Options [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Outstanding	483,237	576,178	654,630	530,965
Stock Options [Member] | Quarter To Date [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average exercise price	$ 73.88	$ 53.33	$ 73.88	$ 53.33
Stock Options [Member] | Year To Date [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average exercise price	$ 68.78	$ 51.78	$ 68.78	$ 51.78
Restricted Stock Awards [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Outstanding	0	0	0	274
Restricted Stock Awards [Member] | Quarter To Date [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average exercise price	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Restricted Stock Awards [Member] | Year To Date [Member]
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Weighted average exercise price	$ 0.00	$ 64.20	$ 0.00	$ 64.20
Subsequent Event [Member]
Dividends, Share Repurchases and Earnings Per Share [Line Items]
Cash dividends declared per common share					$ 0.32
Stock Repurchase Program, Remaining Authorized Repurchase Amount							$ 125,000,000