EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY: (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Mar. 31, 2016
EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY:
Net earnings (loss) from continuing operations	$ 1,073	$ (439)	$ 12,189	$ (6,966)
Net earnings (loss) from discontinued operations, net of tax		(971)		15,240
Net earnings (loss)	$ 1,073	$ (1,410)	$ 12,189	$ 8,274
Basic earnings (loss) per share:
Basic weighted-average shares outstanding	77,507	77,831	77,475	77,903
Continuing operations (in dollars per share)	$ 0.01	$ (0.01)	$ 0.16	$ (0.09)
Discontinued operations (in dollars per share)		(0.01)		0.20
Net earnings (in dollar per share)	$ 0.01	$ (0.02)	$ 0.16	$ 0.11
Diluted earnings (loss) per share:
Basic weighted-average shares outstanding	77,507	77,831	77,475	77,903
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)	2,344		2,019
Diluted weighted-average shares outstanding	79,851	77,831	79,494	77,903
Continuing operations (in dollars per share)	$ 0.01	$ (0.01)	$ 0.15	$ (0.09)
Discontinued operations (in dollars per share)		(0.01)		0.20
Net earnings (loss) (in dollars per share)	$ 0.01	$ (0.02)	$ 0.15	$ 0.11
Stockholders' Equity
Number of shares outstanding under options, warrants and restricted stock units (in shares)	156	1,112	345	1,751
Repurchase of treasury stock			$ 30,542	$ 37,535
Cumulative amount paid for repurchase of treasury stock	$ 1,038,652		1,038,652		$ 1,003,382
Common stock repurchase program
Stockholders' Equity
Maximum amount of common stock that may be repurchased	$ 400,000		$ 400,000
Number of shares repurchased			1,300
Repurchase of treasury stock			$ 30,500
Cumulative shares repurchased	16,800		16,800
Cumulative amount paid for repurchase of treasury stock	$ 285,700		$ 285,700
Remaining capacity under the stock repurchase program	$ 114,300		$ 114,300
Options, Warrants And Restricted Stock Units
Stockholders' Equity
Number of shares outstanding under options, warrants and restricted stock units (in shares)		1,500		1,400
Options, Warrants And Restricted Stock Units | Minimum
Stockholders' Equity
Range of exercise prices for options and warrants (in dollars per share)	$ 32.85	$ 17.49	$ 20.27	$ 17.49
Options, Warrants And Restricted Stock Units | Maximum
Stockholders' Equity
Range of exercise prices for options and warrants (in dollars per share)	$ 32.85	$ 62.06	$ 32.85	$ 62.06