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ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Repurchase of Common Stock (Details) - shares |  | 12 Months Ended |
--- | --- | --- | ---
Feb. 21, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Oct. 31, 2020
February 2021 Stock Repurchase Plan [Member] | Subsequent Event [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased | 560,000 |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased, Percentage of Shares Outstanding | 5.00% |  |  |
Stock Repurchase Program, Period in Force | 1 year |  |  |
October 2019, March 2020, and October 2020 Stock Repurchase Plans [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock Repurchase Program, Number of Shares Authorized to be Repurchased |  |  |  | 1,854,922
Stock Repurchased During Period, Shares |  | 1,276,869 |  |
October 2020 Stock Repurchase Plan [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased |  | 84,266 |  |
October 2019 Stock Repurchase Plan [Member] |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |
Stock Repurchased During Period, Shares |  |  | 493,787 |

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- Definition Stock Repurchase Program, Number of Shares Authorized to be Repurchased, Percentage of Shares Outstanding + References No definition available. + Details
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- Definition 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. + References No definition available. + Details
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- Definition The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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- Definition Period which shares may be purchased under a stock repurchase plan authorized by an entity's Board of Directors, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The remaining number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan. + References No definition available. + Details
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- Definition Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 3: 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=120397183&loc=d3e187085-122770 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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