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SHAREHOLDERS’ EQUITY AND REGULATORY CAPITAL - Narrative (Details) - USD ($)	13 Months Ended
	Sep. 30, 2016	Jan. 19, 2016	Sep. 14, 2015
Equity [Abstract]
Aggregate capital, amount		$ 100,000,000
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased			416,000
Acquisition of treasury stock (in shares)	82,725
Acquisition of treasury stock	$ 1,438,000
Acquisition of treasury stock (in usd per share)	$ 17.38
Maximum
Equity, Class of Treasury Stock [Line Items]
Stock repurchase program authorized, maximum percentage of outstanding shares of common stock			5.00%

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Authorized Share Capital

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- Definition

Stock Repurchase Program Authorized, Percentage Of Outstanding Shares Of Common Stock

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

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Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.30)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.30)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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