Income Taxes (Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Current deferred tax asset	$ 0	$ 0
Non-current deferred tax asset	9,211	7,295
Current deferred tax liability	0	0
Non-current deferred tax liability	(534)	(616)
Net deferred tax asset	8,677	6,679
Uncollectible accounts and other reserves	1,063	915
Depreciation and amortization	(673)	421
Inventories	824	683
Compensation costs	5,863	4,925
Tax carryforwards	7,514	6,263
Valuation allowance	(5,952)	(5,970)
Identifiable intangible assets	(581)	(558)
Other	619	0
Net deferred tax asset	$ 8,677	$ 6,679