Borrowings (FHLB Advances) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
San Francisco advances
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
FHLB - San Francisco advances	$ 101,107	$ 126,163

Amount of borrowings as of the balance sheet date from the Federal Home Loan Bank, which are primarily used to cover shortages in the required reserve balance and liquidity shortages.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 470
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6479118&loc=d3e64650-112822

Name:	us-gaap_AdvancesFromFederalHomeLoanBanks
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant