EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS’ EQUITY: Reconciliation of basic and diluted earnings (loss) per share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY [Abstract]
Net earnings (loss) from continuing operations	$ (38,040)	$ (15,261)	$ (120,382)	$ (84,259)
Earnings from discontinued operations, net of tax	0	1,071,661	0	1,158,267
Net earnings (loss)	$ (38,040)	$ 1,056,400	$ (120,382)	$ 1,074,008
Basic earnings (loss) per share:
Basic weighted-average shares outstanding (in shares)	67,473	77,398	68,021	77,260
Basic earnings (loss) per share from continuing operations (in dollars per share)	$ (0.56)	$ (0.20)	$ (1.77)	$ (1.09)
Basic earnings (loss) per share from discontinued operations (in dollars per share)	0	13.85	0	14.99
Basic earnings (loss) per share (in dollars per share)	$ (0.56)	$ 13.65	$ (1.77)	$ 13.90
Diluted earnings (loss) per share:
Basic weighted-average shares outstanding (in shares)	67,473	77,398	68,021	77,260
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)	0	0	0	0
Diluted weighted-average shares outstanding	67,473	77,398	68,021	77,260
Diluted earnings (loss) per share from continuing operations (in dollars per share)	$ (0.56)	$ (0.20)	$ (1.77)	$ (1.09)
Diluted earnings (loss) per share from discontinued operations (in dollars per share)	0	13.85	0	14.99
Diluted earnings (loss), net per share (in USD per share)	$ (0.56)	$ 13.65	$ (1.77)	$ 13.90