Income Taxes (Significant Components Of Deferred Tax Assets And Liabilities) (Details) - USD ($)	Dec. 31, 2017	Sep. 30, 2017
Components Of Deferred Tax Assets And Liabilities [Line Items]
Federal net operating loss carryforwards	$ 4,063,000	$ 4,075,000
State net operating loss carryforwards	1,703,000	963,000
AMT credit carryforward	533,000	533,000
Foreign net operating loss carryforwards - U.K.	10,578,000	10,578,000
Foreign capital allowance - U.K.	108,000	108,000
UK bad debts	2,000	2,000
Restricted stock - U.K.	1,000	1,000
US unearned revenue	282,000	409,000
US deferred rent	20,000	76,000
Share-based compensation	335,000	447,000
Warrants	1,820,000	1,797,000
Gross deferred tax assets	19,516,000	19,071,000
Valuation allowance for deferred tax assets	(2,144,000)	(2,144,000)
Net deferred tax assets	17,372,000	16,927,000
Deferred Tax Liabilities:
In process research and development	(4,562,000)	(7,000,000)
Developed Technology	(575,000)	(900,000)
Covenant not-to-compete	(106,000)	(200,000)
Other	(5,000)
Net deferred tax liabilities	(5,248,000)	(8,100,000)
Net deferred tax assets	12,124,000	8,827,000
U.S. [Member]
Components Of Deferred Tax Assets And Liabilities [Line Items]
Other, net	$ 71,000	$ 82,000