SEGMENT INFORMATION - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2018
Segment Reporting Information [Line Items]
Revenues	$ 58,107	$ 50,080
Pre-tax income (loss)	1,323	(5,767)
Assets	71,268	64,489	$ 68,449
Depreciation and amortization	398	379
Interest	8	2
Capital expenditures	151	45
Corporate
Segment Reporting Information [Line Items]
Revenues	0	0
Pre-tax income (loss)	(1,381)	(6,349)
Assets	12,347	11,510
Depreciation and amortization	134	135
Interest	0	0
Capital expenditures	113	0
Brokerage and Advisory Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues	57,333	49,557
Pre-tax income (loss)	3,207	1,574
Assets	55,608	50,390
Depreciation and amortization	193	186
Interest	8	2
Capital expenditures	11	39
Tax and Accounting Services | Operating Segments
Segment Reporting Information [Line Items]
Revenues	774	523
Pre-tax income (loss)	(503)	(992)
Assets	3,313	2,589
Depreciation and amortization	71	58
Interest	0	0
Capital expenditures	$ 27	$ 6