STOCK COMPENSATION (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Sep. 30, 2018
Number of Shares
Options outstanding, beginning of period (in shares)	59,835
Granted (in shares)	0
Exercised (in shares)	(15,030)
Forfeited or expired (in shares)	0
Options outstanding, end of period (in shares)	44,805
Options exercisable, end of period (in shares)	44,805
Weighted Average Exercise Price
Options outstanding, beginning of period (in dollars per share)	$ 8.06
Granted (in dollars per share)	0
Exercised (in dollars per share)	7.85
Forfeited or expired (in dollars per share)	0
Options outstanding, end of period (in dollars per share)	$ 8.14
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Weighted Average Remaining Contractual Term	1 year 3 months 29 days
Options exercisable, end of period (in dollars per share)	$ 8.14
Weighted Average Remaining Contractual Term
Options outstanding	1 year 3 months 7 days	1 year 6 months 14 days
Options exercisable	1 year 3 months 7 days
Aggregate Intrinsic Value
Options outstanding, beginning of period	$ 1,469
Granted	0
Exercised	367
Forfeited or expired	0
Options outstanding, end of period	1,271
Options exercisable, end of period	$ 1,271
Number of Shares
Nonvested shares outstanding, beginning of period (in shares)	926,122
Granted (in shares)	154,422
Vested (in shares)	(230,067)
Forfeited or expired (in shares)	(3,817)
Nonvested shares outstanding, end of period (in shares)	846,660
Weighted Average Fair Value at Grant
Nonvested shares outstanding, beginning of period (in dollars per share)	$ 29.54
Granted (in dollars per share)	32.82
Vested (in dollars per share)	29.47
Forfeited or expired (in dollars per share)	32.96
Nonvested shares outstanding, end of period (in dollars per share)	$ 30.14
Stock based compensation expense not yet recognized in income	$ 13,300
Weighted average remaining period for unrecognized stock based compensation	2 years 7 months 9 days