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				6 Months Ended
	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2018	Jun. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
EARNINGS (LOSS) PER SHARE AND STOCKHOLDERS' EQUITY [Abstract]
Net earnings (loss) from continuing operations	$ (40,202)		$ (41,180)		$ (82,342)	$ (68,998)
Earnings from discontinued operations, net of tax	0		61,803		0	86,606
Net earnings (loss)	$ (40,202)	$ (42,140)	$ 20,623	$ (3,015)	$ (82,342)	$ 17,608
Basic earnings (loss) per share:
Basic weighted-average shares outstanding (in shares)	67,684		77,448		68,295	77,192
Basic earnings (loss) per share from continuing operations (in dollars per share)	$ (0.59)		$ (0.53)		$ (1.21)	$ (0.89)
Basic earnings (loss) per share from discontinued operations (in dollars per share)	0		0.80		0	1.12
Basic earnings (loss) per share (in dollars per share)	$ (0.59)		$ 0.27		$ (1.21)	$ 0.23
Diluted earnings (loss) per share:
Basic weighted-average shares outstanding (in shares)	67,684		77,448		68,295	77,192
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	67,684		77,448		68,295	77,192
Diluted earnings (loss) per share from continuing operations (in dollars per share)	$ (0.59)		$ (0.53)		$ (1.21)	$ (0.89)
Diluted earnings (loss) per share from discontinued operations (in dollars per share)	0		0.80		0	1.12
Diluted earnings (loss), net per share (in USD per share)	$ (0.59)		$ 0.27		$ (1.21)	$ 0.23