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EARNINGS PER COMMON SHARE - Shares of common stock underlying RSUs (Details) - shares	1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Jun. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2019
Earnings Per Common Share
Number of underlying shares				241,076	230,752
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric				98,073	98,401
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric				37,513	92,748
Total				135,586	191,149
Common shares not included in calculation due applicable metric had not been met at measurement dates				105,490	39,603
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				20,210
Total				20,210
Common shares not included in calculation due applicable metric had not been met at measurement dates				65,140
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	23,375
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric					17,722
Total				40,350	41,097
Common shares not included in calculation due applicable metric had not been met at measurement dates				40,350	39,603
August 3, 2020
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	37,513
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric				37,513	37,513
Total				75,026	75,026
July 1, 2019
Earnings Per Common Share
Number of underlying shares					75,026
Number of shares included in diluted weighted average number of shares pursuant to return on capital performance metric					37,513
Number of shares in diluted weighted average number of shares pursuant to stockholder return metric					37,513
Total					75,026
Restricted stock units
Earnings Per Common Share
Number of shares awarded		85,350	80,700	85,350	80,700
Number of shares vested				64,488	73,750
Number of shares forfeited				10,538
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 | Awards granted in 2018
Earnings Per Common Share
Number of shares forfeited						2,500
Restricted stock units | Awards granted in 2019
Earnings Per Common Share
Number of shares forfeited						2,750

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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.

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