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SHAREHOLDERS' EQUITY AND REGULATORY CAPITAL - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended |
--- | --- | --- | ---
Apr. 21, 2020 | Mar. 31, 2020 | Mar. 31, 2016
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 |  | $ 2,600 |
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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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Total cost of shares repurchased divided by the total number of shares repurchased. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -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 + Details
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