ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES - Recent Accounting Standards (Details) - USD ($) $ in Millions		3 Months Ended
Jan. 01, 2018	Sep. 30, 2017
Accounting Standards Update 2017-12
New Accounting Pronouncement, Early Adoption [Line Items]
Held to maturity securities reclassified to available for sale		$ 15.9
Reclassification out of Accumulated Other Comprehensive Loss \| Accounting Standards Update 2018-02
New Accounting Pronouncement, Early Adoption [Line Items]
Effect on retained earnings due to tax expense	$ 1.4

Amount of the cumulative effect on retained earnings net of related income tax effect.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 250
-SubTopic 10
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=64853466&loc=d3e22663-107794

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