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SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Apr. 18, 2019	Mar. 31, 2019	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)		82,725
Acquisition of treasury stock		$ 1,438
Acquisition of treasury stock (in usd per share)		$ 17.38
Subsequent Event
Equity, Class of Treasury Stock [Line Items]
Dividends declared per share (in usd per share)	$ 0.15
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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- Definition

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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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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