INCOME TAXES: (Tables)

6 Months Ended

Dec. 31, 2019

Income Tax Disclosure [Abstract]

Summary of income tax (expense) benefit and corresponding effective tax rates

A summary of income tax benefit (expense) and corresponding effective tax rates is as follows:

	For the Three Months Ended December 31,						For the Six Months Ended December 31,
	2019			2018			2019			2018
	(Dollars in thousands)
Income tax benefit (expense)	$	795		$	(454	)	$	3,651		$	260
Effective tax rate	7.7		%	52.1		%	13.4		%	85.0		%