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EARNINGS PER COMMON SHARE - Shares of common stock underlying RSUs (Details) - shares | 1 Months Ended | 12 Months Ended
--- | --- | ---
Aug. 31, 2021 | Jun. 30, 2021 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Earnings Per Common Share |  |  |  |  |  |
Number of underlying shares |  |  | 241,076 | 230,752 | 223,802 |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 118,085 | 115,376 | 85,569 |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 37,513 | 115,376 | 37,513 |
Total |  |  | 155,598 | 230,752 | 123,082 |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  | 85,478 |  | 100,720 |
Options outstanding |  |  | 0 | 0 | 0 |
July 1, 2022 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of underlying shares |  |  | 85,350 |  |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 40,222 |  |  |
Total |  |  | 40,222 |  |  |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  | 45,128 |  |  |
August 3, 2021 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of underlying shares |  |  | 80,700 | 80,700 |  |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 40,350 | 40,350 |  |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  |  | 40,350 |  |
Total |  |  | 40,350 | 80,700 |  |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  | 40,350 |  |  |
August 3, 2020 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of underlying shares |  |  | 75,026 | 75,026 | 75,026 |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  | 37,513 | 37,513 | 37,513 |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  | 37,513 | 37,513 | 37,513 |
Total |  |  | 75,026 | 75,026 | 75,026 |
July 1, 2019 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of underlying shares |  |  |  | 75,026 | 75,026 |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  |  | 37,513 | 23,233 |
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric |  |  |  | 37,513 |  |
Total |  |  |  | 75,026 | 23,233 |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  |  |  | 51,793 |
July 1, 2018 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of underlying shares |  |  |  |  | 73,750 |
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric |  |  |  |  | 24,823 |
Total |  |  |  |  | 24,823 |
Common shares not included in calculation due applicable metric had not been met at measurement dates |  |  |  |  | 48,927 |
Restricted stock units |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of shares awarded |  |  | 85,350 | 80,700 | 75,026 |
Number of shares vested |  |  | 64,488 | 73,750 | 24,343 |
Number of shares forfeited |  |  | 10,538 |  | 51,907 |
Restricted stock units | July 1, 2019 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of shares vested |  | 64,488 |  |  |  |
Number of shares forfeited |  | 10,538 |  |  |  |
Restricted stock units | July 1, 2018 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of shares vested | 73,750 |  |  |  |  |
Restricted stock units | Awards granted in 2019 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of shares forfeited |  |  |  |  |  | 2,750
Restricted stock units | Awards granted in 2018 |  |  |  |  |  |
Earnings Per Common Share |  |  |  |  |  |
Number of shares forfeited |  |  |  |  |  | 2,500

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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=126962052&loc=d3e4991-113900 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 22 -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1707-109256 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1500-109256 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 23 -Subparagraph (c) -URI https://asc.fasb.org/extlink&oid=126958026&loc=d3e1757-109256 + Details
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