Leases (Details Textual) - USD ($)	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2019	Dec. 31, 2018
Lessee Lease Description [Line Items]
Operating lease, existence of option to extend		true
Operating lease right-of-use asset	$ 2,000,000	$ 2,000,000
Operating lease liability	1,944,000	$ 1,944,000
Operating lease cost	69,000		$ 202,000
Operating cash flows from operating leases	64,000		186,000
Non-cash expense amortization of right of use asset and implicit interest	$ 5,000		$ 16,000
Minimum
Lessee Lease Description [Line Items]
Operating lease remaining lease term		5 years
Operating lease option to extend term	5 years	5 years
Maximum
Lessee Lease Description [Line Items]
Operating lease remaining lease term		10 years
Operating lease option to extend term	15 years	15 years