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SHARE BASED COMPENSATION, 401(K) PLAN AND DEFERRED COMPENSATION - Restricted Performance Share Units (Details) - Restricted Performance Share Units Plan - USD ($) $ in Thousands |  |  |  |  | 12 Months Ended
--- | --- | --- | --- | --- | ---
Feb. 21, 2019 | Feb. 28, 2018 | Mar. 01, 2017 | Feb. 22, 2016 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Ending balance (in shares) | 37,472 |  |  |  | 233,890
Executive Officers |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Beginning balance (in shares) |  |  |  |  | 375,550
Granted (in shares) |  |  |  |  | 213,728
Units Cancelled (in shares) |  |  |  |  | (25,323)
Ending balance (in shares) |  |  |  |  | 555,535
Total number of shares authorized for issuance (in shares) |  | 213,728 | 209,193 | 174,854 |
Fair Value of Units on Grant Date |  | $ 4,627 | $ 4,276 | $ 3,735 |
Executive Officers | February 22, 2016 RSPU Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Beginning balance (in shares) |  |  |  |  | 169,525
Granted (in shares) |  |  |  |  | 0
Units Cancelled (in shares) |  |  |  |  | (1,935)
Ending balance (in shares) |  |  |  |  | 159,170
Executive Officers | March 01, 2017 RSPU Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Beginning balance (in shares) |  |  |  |  | 206,025
Granted (in shares) |  |  |  |  | 0
Units Cancelled (in shares) |  |  |  |  | (15,729)
Ending balance (in shares) |  |  |  |  | 190,296
Executive Officers | February 28, 2018 RSPU Grant |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Beginning balance (in shares) |  |  |  |  | 0
Granted (in shares) |  |  |  |  | 213,728
Units Cancelled (in shares) |  |  |  |  | (7,659)
Ending balance (in shares) |  |  |  |  | 206,069

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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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