Other Current Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Prepaid taxes	$ 587	$ 503
Landlord receivable	195	195
Prepaid expenses	926	680
Other	94	93
Total	$ 1,802	$ 1,471