Income Taxes - Valuation allowance and NOL (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Income Taxes
Unrecognized tax benefit would impact the effective tax rate	$ 0
Federal net operating loss carryforwards	4,900
Federal net operating loss carryforwards will expire in 2037	400
Federal net operating loss carryforwards indefinite carryforward period	$ 4,500
Percentage of taxable income offset against net operating carryforward	80.00%
State net operating loss carryforwards	$ 900
Foreign net operating loss carryforwards indefinite carryforward period	200
Federal interest expense carryover	600
Charitable contribution carryforwards	$ 200