Income Taxes - Deferred Tax Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Sep. 30, 2017
Deferred tax assets (liabilities):
Net operating loss carryforwards	$ 3,673	$ 6,229
Contingent consideration	203	123
Stock based compensation	938	819
Accrued expenses	1,031	1,404
Accounts receivable and other receivables	149	216
Federal AMT credit carryforward	260	261
Fixed assets	(186)	(186)
Intangibles	(361)	(486)
Securities	(1,515)	(1,960)
Total deferred tax asset, net	$ 4,192	$ 6,420