Income Tax - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017	Jul. 01, 2017
Income Tax Disclosure [Abstract]
Income tax expense	$ 566	$ 842	$ 1,289	$ 642
Effective income tax rate			21.00%		35.00%
Deferred tax assets	$ 117,000		$ 117,000			$ 174,000
Tax cuts and jobs act 2017, measurement period from enactment date	1 year