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EARNINGS PER COMMON SHARE (Details) |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 05, 2018 shares | Sep. 30, 2018 USD ($) $ / shares | Jun. 30, 2018 USD ($) $ / shares | Mar. 31, 2018 USD ($) $ / shares | Dec. 31, 2017 USD ($) $ / shares | Sep. 30, 2017 USD ($) $ / shares | Jun. 30, 2017 USD ($) $ / shares | Mar. 31, 2017 USD ($) $ / shares | Dec. 31, 2016 USD ($) $ / shares | Sep. 30, 2016 USD ($) $ / shares | Jun. 30, 2016 USD ($) $ / shares | Mar. 31, 2016 USD ($) $ / shares | Dec. 31, 2015 USD ($) $ / shares | Sep. 30, 2018 USD ($) $ / shares shares | Sep. 30, 2017 USD ($) $ / shares shares | Sep. 30, 2016 USD ($) $ / shares shares
Basic income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income attributable to parent |  | $ 8,722,000 | $ 6,792,000 | $ 31,436,000 | $ 4,670,000 | $ 1,744,000 | $ 9,787,000 | $ 32,142,000 | $ 1,244,000 | $ 6,006,000 | $ 8,873,000 | $ 14,283,000 | $ 4,058,000 | $ 51,620,000 |  | $ 44,917,000 |  | $ 33,220,000 |
Weighted average common shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 30,737,499 |  | $ 27,741,276 |  | $ 25,331,868 |
Basic income per common share (in dollars per share) | $ / shares |  | $ 0.24 | $ 0.22 | $ 1.07 | $ 0.15 | $ 0.07 | $ 0.35 | $ 1.15 | $ 0.05 | $ 0.23 | $ 0.35 | $ 0.57 | $ 0.16 | $ 1.68 | [1] | $ 1.62 | [1] | $ 1.31 | [1]
Diluted income per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net Income attributable to parent |  | $ 8,722,000 | $ 6,792,000 | $ 31,436,000 | $ 4,670,000 | $ 1,744,000 | $ 9,787,000 | $ 32,142,000 | $ 1,244,000 | $ 6,006,000 | $ 8,873,000 | $ 14,283,000 | $ 4,058,000 | $ 51,620,000 |  | $ 44,917,000 |  | $ 33,220,000 |
Weighted average common shares outstanding (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,737,499 |  | 27,741,276 |  | 25,331,868 |
Outstanding options - based upon the two-class method (in shares) |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 115,551 |  | $ 166,956 |  | $ 160,170 |
Weighted average diluted common shares outstanding (in shares) | shares |  |  |  |  |  |  |  |  |  |  |  |  |  | 30,853,050 |  | 27,908,232 |  | 25,492,038 |
Diluted income per common share (in dollars per share) | $ / shares |  | $ 0.24 | $ 0.22 | $ 1.06 | $ 0.15 | $ 0.07 | $ 0.35 | $ 1.14 | $ 0.05 | $ 0.23 | $ 0.35 | $ 0.56 | $ 0.16 | $ 1.67 | [1] | $ 1.61 | [1] | $ 1.30 | [1]
Subsequent Event [Member] | Common Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock split, conversion ratio | 3 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued, stock split (in shares) | shares | 39,200,000.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
[1] | All share and per share data for all periods presented has been adjusted to reflect the 3-for-1 forward stock split of the Company's common stock effected by the Company on October 4, 2018.

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