EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY: (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Mar. 31, 2016
EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY:
Net earnings (loss) from continuing operations	$ 3,976	$ (5,182)
Net earnings from discontinued operations, net of tax		4,143
Net earnings (loss)	$ 3,976	$ (1,039)
Basic earnings (loss) per share:
Basic weighted-average shares outstanding	77,471	77,918
Continuing operations (in dollars per share)	$ 0.05	$ (0.07)
Discontinued operations (in dollars per share)		0.05
Net earnings (loss) (in dollar per share)	$ 0.05	$ (0.01)
Diluted earnings (loss) per share:
Basic weighted-average shares outstanding	77,471	77,918
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)	1,882
Diluted weighted-average shares outstanding	79,353	77,918
Continuing operations (in dollars per share)	$ 0.05	$ (0.07)
Net earnings from discontinued operations (in dollars per share)		0.05
Net earnings (loss) (in dollars per share)	$ 0.05	$ (0.01)
Stockholders' Equity
Number of shares outstanding under options, warrants and restricted stock units (in shares)	709	2,029
Repurchase of treasury stock	$ 20,207	$ 14,951
Cumulative amount paid for repurchase of treasury stock	1,024,915		$ 1,003,382
Common stock repurchase program
Stockholders' Equity
Maximum amount of common stock that may be repurchased	$ 400,000
Number of shares repurchased	900
Repurchase of treasury stock	$ 20,200
Cumulative shares repurchased	16,400
Cumulative amount paid for repurchase of treasury stock	$ 275,400
Remaining capacity under the stock repurchase program	$ 124,600
Options, Warrants And Restricted Stock Units
Stockholders' Equity
Number of shares outstanding under options, warrants and restricted stock units (in shares)		1,400
Options, Warrants And Restricted Stock Units | Minimum
Stockholders' Equity
Range of exercise prices for options and warrants (in dollars per share)	$ 19.07	$ 2.58
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