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, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Mar. 31, 2015
EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY:
Net earnings (loss) from continuing operations	$ (439)	$ 337	$ (6,966)	$ (17,505)
Net earnings (loss) from discontinued operations	(971)	3,819	15,240	12,513
Net earnings (loss)	$ (1,410)	$ 4,156	$ 8,274	$ (4,992)
Basic earnings (loss) per share:
Basic weighted-average shares outstanding	77,831	77,039	77,903	76,998
Continuing operations (in dollars per share)	$ (0.01)	$ 0.00	$ (0.09)	$ (0.23)
Discontinued operations (in dollars per share)	(0.01)	0.05	0.20	0.16
Net earnings (loss) (in dollars per share)	$ (0.02)	$ 0.05	$ 0.11	$ (0.06)
Diluted earnings (loss) per share:
Basic weighted-average shares outstanding	77,831	77,039	77,903	76,998
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)		1,263
Diluted weighted-average shares outstanding	77,831	78,302	77,903	76,998
Continuing operations (in dollars per share)	$ (0.01)	$ 0.00	$ (0.09)	$ (0.23)
Discontinued operations (in dollars per share)	(0.01)	0.05	0.20	0.16
Net earnings (loss) (in dollars per share)	$ (0.02)	$ 0.05	$ 0.11	$ (0.06)
Stockholders' Equity
Number of shares outstanding under options, warrants and restricted stock units (in shares)	1,112	2,012	1,751	1,838
Repurchase of treasury stock			$ 37,535	$ 9,868
Cumulative amount paid for repurchase of treasury stock	$ 987,903		$ 987,903		$ 945,274
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	1,300
Minimum
Stockholders' Equity
Range of exercise prices for options and warrants (in dollars per share)	$ 17.49	$ 18.78	$ 17.49	$ 19.18
Maximum
Stockholders' Equity
Range of exercise prices for options and warrants (in dollars per share)	$ 62.06	$ 62.06	$ 62.06	$ 62.06
2011 Common stock repurchase program
Stockholders' Equity
Maximum amount of common stock that may be repurchased	$ 300,000		$ 300,000
Shares repurchased			1,900
Repurchase of treasury stock			$ 37,500
Cumulative shares repurchased	14,800		14,800
Cumulative amount paid for repurchase of treasury stock	$ 240,000		$ 240,000
Remaining capacity under the stock repurchase program	$ 60,000		$ 60,000