Nature of Operations, Management's Plans and Summary of Significant Accounting Policies (Details Narrative) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 31, 2019	Dec. 31, 2018	Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2019	Mar. 31, 2018	Sep. 30, 2018
Cash on hand	$ 19,033	$ 15,988	$ 13,419	$ 10,989	$ 19,033	$ 13,419	$ 22,451
Working capital					14,289
Net loss	4,953	$ 4,729	$ 498	$ 4,155	4,953	$ 498
Earnout liability							8,021
Deferred revenue, current	10,129				10,129		$ 9,194
Greece [Member]
Cash on hand	$ 1,863				$ 1,863