Income Taxes (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Taxes
Deferred tax assets	$ 13,760	$ 11,460
Unrecognized tax benefits impacting effective tax rate	298	679
Unrecognized tax benefits, interest and penalties	9	$ 14
Domestic tax authority | Internal revenue service (IRS)
Income Taxes
Net operating loss carryforwards	16,300
State and local jurisdiction
Income Taxes
Net operating loss carryforwards	16,300
Foreign tax authority | Tax authority, spain
Income Taxes
Net operating loss carryforwards	$ 8,600
Foreign tax authority | Inland revenue, hong Kong | Earliest tax year
Income Taxes
Years of tax examination	2009
Foreign tax authority | Inland revenue, hong Kong | Latest tax year
Income Taxes
Years of tax examination	2011