Other Borrowings - Schedule of Other Borrowings (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014
Banking and Thrift [Abstract]
FHLB advances maturing within 90 days or less, Balance	$ 475,000	$ 50,000
FHLB advances maturing within 90 days or less, Weighted Average Rate (as a percent)	0.20%	0.20%
FHLB advances maturing total, Balance	$ 475,000	$ 50,000
FHLB advances maturing total, Weighted Average Rate (as a percent)	0.20%	0.20%