Income Taxes - Components of total tax expense (benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Current tax expense (benefit) - U.S. Federal									$ (21)	$ (904)	$ 91
Current tax expense (benefit) - Non-U.S.									36	0	0
Deferred tax expense (benefit) - U.S. Federal									807	387	9
Total tax expense (benefit) - continuing operations	$ 801	$ 25	$ 3	$ (7)	$ (51)	$ 14	$ (466)	$ (14)	822	(517)	100
Current tax expense (benefit) - U.S. Federal									0	(125)	(85)
Total tax expense (benefit)									$ 822	$ (642)	$ 15