INCOME TAXES: (Tables)

9 Months Ended

Mar. 31, 2020

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 March 31,						For the Nine Months Ended March 31,
	2020			2019			2020			2019
	(Dollars in thousands)
Income tax benefit (expense)	$	2,253		$	(3,248)		$	5,904		$	(2,988)
Effective tax rate	2.9		%	(28.1		%)	5.6		%	(25.2)		%