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STOCK-BASED COMPENSATION - PERFORMANCE SHARES AND RESTRICTED STOCK ACTIVITY (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2018 | Nov. 09, 2020 | Nov. 12, 2019 | Nov. 13, 2018
Performance share awards |  |  |  |  |  |
Shares |  |  |  |  |  |
Outstanding at beginning of period (in shares) | 130,509 | 145,176 | 156,587 |  |  |
Granted (in shares) | 82,064 | 100,262 | 91,177 |  |  |
Vested (in shares) | (55,025) | (103,009) | (100,146) |  |  |
Cancelled/forfeited (in shares) | (1,817) | (11,920) | (2,442) |  |  |
Outstanding at end of period (in shares) | 155,731 | 130,509 | 145,176 |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Outstanding at beginning of period (in dollars per share) | $ 46.53 | $ 39.67 | $ 30.12 |  |  |
Granted (in dollars per share) | 40.61 | 47.98 | 44.67 |  |  |
Vested (in dollars per share) | 44.27 | 38.52 | 29.49 |  |  |
Cancelled/forfeited (in dollars per share) | 44.38 | 44.34 | 31.45 |  |  |
Outstanding at end of period (in dollars per share) | $ 44.22 | $ 46.53 | $ 39.67 |  |  |
Total Fair Value of Vested Shares | $ 2,083 | $ 4,622 | $ 4,714 |  |  |
Percent of awards to common stock |  |  |  |  | 117.00% | 121.00%
Number of common shared issued (in shares) |  |  |  |  | 26,413 | 39,694
Percent of awards to common stock, target |  |  |  |  | 100.00% | 100.00%
Performance share awards | Minimum |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Percent of awards to common stock | 0.00% |  |  |  |  |
Performance share awards | Maximum |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Percent of awards to common stock | 150.00% |  |  |  |  |
Performance Shares, Subject to Performance Conditions |  |  |  |  |  |
Shares |  |  |  |  |  |
Outstanding at beginning of period (in shares) | 63,870 | 59,341 |  |  |  |
Outstanding at end of period (in shares) | 48,941 | 63,870 | 59,341 |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Percent of awards to common stock |  |  |  |  |  | 99.00%
Number of common shared issued (in shares) |  |  |  |  |  | 38,660
Performance-based Restricted Stock |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Percent of awards to common stock |  |  |  |  | 100.00% | 100.00%
Number of common shared issued (in shares) |  |  |  |  | 24,468 | 36,998
Performance Shares, TSR |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Percent of awards to common stock |  |  |  |  | 119.00% |
Number of common shared issued (in shares) |  |  |  |  | 43,641 |
Restricted Stock |  |  |  |  |  |
Shares |  |  |  |  |  |
Outstanding at beginning of period (in shares) | 58,156 | 44,168 | 51,154 |  |  |
Granted (in shares) | 42,478 | 35,284 | 27,949 |  |  |
Vested (in shares) | (25,973) | (20,748) | (33,815) |  |  |
Cancelled/forfeited (in shares) | (1,175) | (548) | (1,120) |  |  |
Outstanding at end of period (in shares) | 73,486 | 58,156 | 44,168 |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Outstanding at beginning of period (in dollars per share) | $ 46.18 | $ 41.24 | $ 32.40 |  |  |
Granted (in dollars per share) | 40.61 | 48.24 | 45.00 |  |  |
Vested (in dollars per share) | 44.71 | 39.26 | 31.23 |  |  |
Cancelled/forfeited (in dollars per share) | 43.62 | 42.96 | 33.54 |  |  |
Outstanding at end of period (in dollars per share) | $ 43.52 | $ 46.18 | $ 41.24 |  |  |
Total Fair Value of Vested Shares | $ 1,073 | $ 935 | $ 1,438 |  |  |
Subsequent Event | Performance share awards |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Percent of awards to common stock |  |  |  | 114.00% |  |
Number of common shared issued (in shares) |  |  |  | 28,513 |  |
Percent of awards to common stock, target |  |  |  | 100.00% |  |
Subsequent Event | Performance-based Restricted Stock |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Percent of awards to common stock |  |  |  | 100.00% |  |
Number of common shared issued (in shares) |  |  |  | 11,139 |  |
Subsequent Event | Performance Shares, TSR |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |
Number of common shared issued (in shares) |  |  |  | 0 |  |

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