ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES: - Earnings (Loss) per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Equity, Class of Treasury Stock [Line Items]
Net earnings (loss) from continuing operations	$ (4,879)	$ (38,040)	$ (40,202)	$ (42,140)	$ (49,688)	$ (15,261)	$ (41,180)	$ (27,818)	$ (125,261)	$ (133,947)	$ (67,299)
Earnings from discontinued operations, net of tax	750	0	0	0	4,227	1,071,661	61,803	24,803	750	1,162,494	90,779
Net loss	$ (4,129)	$ (38,040)	$ (40,202)	$ (42,140)	$ (45,461)	$ 1,056,400	$ 20,623	$ (3,015)	$ (124,511)	$ 1,028,547	$ 23,480
Basic earnings (loss) per share:
Basic weighted-average shares outstanding (in shares)									67,760	75,020	78,891
Basic earnings (loss) per share from continuing operations (in dollars per share)	$ (0.07)	$ (0.56)	$ (0.59)	$ (0.61)	$ (0.73)	$ (0.20)	$ (0.53)	$ (0.36)	$ (1.85)	$ (1.79)	$ (0.85)
Basic earnings (loss) per share from discontinued operations (in dollars per share)	0.01	0	0	0	0.06	13.85	0.80	0.32	0.01	15.50	1.15
Basic earnings (loss) per share (in USD per share)	(0.06)	(0.56)	(0.59)	(0.61)	(0.67)	13.65	0.27	(0.04)	$ (1.84)	$ 13.71	$ 0.30
Diluted earnings (loss) per share:
Basic weighted-average shares outstanding (in shares)									67,760	75,020	78,891
Dilutive effect of common stock options, warrants, and restricted stock as computed under the treasury stock method (in shares)									0	0	0
Diluted weighted-average shares outstanding									67,760	75,020	78,891
Diluted earnings (loss) per share from continuing operations (in dollars per share)	(0.07)	(0.56)	(0.59)	(0.61)	(0.73)	(0.20)	(0.53)	(0.36)	$ (1.85)	$ (1.79)	$ (0.85)
Diluted earnings (loss) per share from discontinued operations (in dollars per share)	0.01	0	0	0	0.06	13.85	0.80	0.32	0.01	15.50	1.15
Diluted earnings (loss), net per share (in USD per share)	$ (0.06)	$ (0.56)	$ (0.59)	$ (0.61)	$ (0.67)	$ 13.65	$ 0.27	$ (0.04)	$ (1.84)	$ 13.71	$ 0.30
Stockholders' Equity Attributable to Parent [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount									1,368	227	20
Minimum
Stockholders' Equity Attributable to Parent [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Options, Exercise Price											$ 32.85
Maximum
Stockholders' Equity Attributable to Parent [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Options, Exercise Price											$ 32.85
Continuing operations
Stockholders' Equity Attributable to Parent [Abstract]
Antidilutive securities excluded from computation of earnings per share, amount									2,393	3,393	2,627