Leases (Details Textual) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Operating Leased Assets [Line Items]
Lessee, operating lease, discount rate	6.00%
Operating lease, right-of-use asset	$ 972		$ 1,106
Operating lease, liability	972
Lease reassessment right of use assets and lease liabilities	$ 67	$ 0
Minimum
Operating Leased Assets [Line Items]
Operating ​lease, ​remaining​ lease ​term	3 years
Maximum
Operating Leased Assets [Line Items]
Operating ​lease, ​remaining​ lease ​term	4 years