BANK DEPOSITS, Summary of Interest Expense on Deposits (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2015	Mar. 31, 2014
Interest expense on deposits [Abstract]
Certificates of deposit	$ 1,459us-gaap_InterestExpenseTimeDeposits	$ 1,508us-gaap_InterestExpenseTimeDeposits	$ 2,983us-gaap_InterestExpenseTimeDeposits	$ 3,056us-gaap_InterestExpenseTimeDeposits
Money market, savings and NOW accounts	631	431	1,244	828
Total interest expense on deposits	$ 2,090us-gaap_InterestExpenseDeposits	$ 1,939us-gaap_InterestExpenseDeposits	$ 4,227us-gaap_InterestExpenseDeposits	$ 3,884us-gaap_InterestExpenseDeposits

Aggregate amount of interest expense on all deposits.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.6)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 6

-Article 9

+ Details

Name:	us-gaap_InterestExpenseDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_InterestExpenseDepositsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The aggregate interest expense incurred on the following for deposits in domestic offices: (1) transaction accounts (NOW, and telephone and preauthorized transfer accounts), (2) money market deposits and (3) savings deposits.

+ References

+ Details

Name:	us-gaap_InterestExpenseNOWAccountsMoneyMarketAccountsAndSavingsDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate interest expense incurred on time deposits, including certificates of deposits, in domestic offices.

+ References

+ Details

Name:	us-gaap_InterestExpenseTimeDeposits
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration