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SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended
	Jul. 21, 2020	Jun. 30, 2020	Sep. 30, 2015
Equity, Class of Treasury Stock [Line Items]
Number of shares authorized to be repurchased (in shares)			416,000
Acquisition of treasury stock (in shares)		154,680
Acquisition of treasury stock		$ 2.6
Acquisition of treasury stock (in usd per share)		$ 16.88
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in usd per share)	$ 0.17
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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Stock Repurchase Program Authorized, Percentage Of Outstanding Shares Of Common Stock

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Aggregate dividends declared during the period for each share of common stock outstanding.

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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.

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

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

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