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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, 2018 | Sep. 30, 2017 | Sep. 30, 2016 | Nov. 13, 2018 | Nov. 14, 2017 | Nov. 15, 2016
Performance share awards |  |  |  |  |  |  |  |  |  |
Shares |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of period (in shares) | [1] | 156,587 |  | 179,916 |  | 214,464 |  |  |  |
Granted (in shares) | [1] | 91,177 |  | 96,507 |  | 115,480 |  |  |  |
Vested (in shares) | [1] | (100,146) | [2] | (95,407) | [3] | (137,053) | [4] |  |  |
Cancelled/forfeited (in shares) | [1] | (2,442) |  | (24,429) |  | (12,975) | [5] |  |  |
Outstanding at end of period (in shares) | [1] | 145,176 |  | 156,587 |  | 179,916 |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of period (in dollars per share) |  | $ 30.12 |  | $ 27.47 |  | $ 23.40 |  |  |  |
Granted (in dollars per share) |  | 44.67 |  | 33.57 |  | 27.37 |  |  |  |
Vested (in dollars per share) |  | 29.49 | [2] | 28.88 | [3] | 21.40 | [4] |  |  |
Cancelled/forfeited (in dollars per share) |  | 31.45 |  | 29.14 |  | 23.40 | [5] |  |  |
Outstanding at end of period (in dollars per share) |  | $ 39.67 |  | $ 30.12 |  | $ 27.47 |  |  |  |
Total Fair Value of Vested Shares |  | $ 4,714 | [2] | $ 4,179 | [3] | $ 5,657 | [4] |  |  |
Percent of awards to common stock |  |  |  |  |  |  |  |  | 100.00% | 150.00%
Number of common shared issued (in shares) |  |  |  |  |  |  |  |  | 36,498.49 | 71,808
Percent of awards to common stock, target |  |  |  |  |  |  |  |  | 119.00% | 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) |  | 51,931 |  | 69,305 |  |  |  |  |  |
Outstanding at end of period (in shares) |  | 59,341 |  | 51,931 |  | 69,305 |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Percent of awards to common stock |  |  |  |  |  |  |  |  |  | 85.00%
Number of common shared issued (in shares) |  |  |  |  |  |  |  |  |  | 55,702.2
Number of shares canceled (in shares) |  |  |  |  |  |  |  |  |  | 9,366
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) |  |  |  |  |  |  |  |  | 28,223 | 23,649
Performance Shares, TSR |  |  |  |  |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Percent of awards to common stock |  |  |  |  |  |  |  |  | 108.44% |
Number of common shared issued (in shares) |  |  |  |  |  |  |  |  | 39,594.6972 |
Restricted Stock |  |  |  |  |  |  |  |  |  |
Shares |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of period (in shares) |  | 51,154 |  | 73,071 |  | 81,492 |  |  |  |
Granted (in shares) |  | 27,949 |  | 28,734 |  | 41,909 |  |  |  |
Vested (in shares) |  | (33,815) |  | (38,752) |  | (48,089) |  |  |  |
Cancelled/forfeited (in shares) |  | (1,120) |  | (11,899) |  | (2,241) |  |  |  |
Outstanding at end of period (in shares) |  | 44,168 |  | 51,154 |  | 73,071 |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Outstanding at beginning of period (in dollars per share) |  | $ 32.40 |  | $ 29.09 |  | $ 27.17 |  |  |  |
Granted (in dollars per share) |  | 45.00 |  | 35.79 |  | 30.03 |  |  |  |
Vested (in dollars per share) |  | 31.23 |  | 28.92 |  | 26.66 |  |  |  |
Cancelled/forfeited (in dollars per share) |  | 33.54 |  | 31.56 |  | 29.21 |  |  |  |
Outstanding at end of period (in dollars per share) |  | $ 41.24 |  | $ 32.40 |  | $ 29.09 |  |  |  |
Total Fair Value of Vested Shares |  | $ 1,438 |  | $ 1,344 |  | $ 1,469 |  |  |  |
Subsequent Event | Performance share awards |  |  |  |  |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Percent of awards to common stock |  |  |  |  |  |  |  | 120.50% |  |
Number of common shared issued (in shares) |  |  |  |  |  |  |  | 39,694.05 |  |
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) |  |  |  |  |  |  |  | 36,998 |  |
Subsequent Event | Performance Shares, TSR |  |  |  |  |  |  |  |  |  |
Weighted Average Grant Date Fair Value |  |  |  |  |  |  |  |  |  |
Percent of awards to common stock |  |  |  |  |  |  |  | 99.00% |  |
Number of common shared issued (in shares) |  |  |  |  |  |  |  | 38,660.49 |  |
[1] | The number of common shares issued related to certain performance shares may range from zero to 150 percent of the number of shares shown in the table above based on the Company’s achievement of performance goals.
[2] | As certified by the Company’s Leadership and Compensation Committee on November 13, 2018, the number of common shares earned related to TSR performance was 99 percent or 38,660 shares, the number of common shares earned related to NFE performance was 121 percent or 39,694 shares and the number of common shares earned related to Performance Based Restricted Stock was 100 percent or 36,998 shares. Each award earned excludes accumulated dividends. The number represented on this line is the target number of 100 percent.
[3] | As certified by the Company’s Leadership and Compensation Committee on November 14, 2017, the number of common shares earned related to TSR performance was 108.44 percent or 39,595 shares, the number of common shares earned related to NFE performance was 119 percent or 36,498 shares, and the number of common shares earned related to Performance Based Restricted Stock was 100 percent or 28,223 shares. Each award earned excludes accumulated dividends. The number represented on this line is the target number of 100 percent.
[4] | As certified by the Company’s Leadership and Compensation Committee on November 15, 2016, the number of common shares related to performance shares earned was 85 percent, or 55,702 shares, the number of common shares earned related to NFE performance was 150 percent or 71,808 shares, and the number of common shares earned related to Performance Based Restricted Stock was 100 percent or 23,649 shares. Each award earned excludes accumulated dividends. The number represented on this line is the target number of 100 percent.
[5] | As certified by the Company’s Leadership and Compensation Committee on November 15, 2016, 9,366 shares were canceled due to not achieving a certain performance target. The remainder were forfeitures due to individuals departing the Company.

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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued 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=109197908&loc=d3e5070-113901 + Details
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