Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Tax Credit Carryforward [Line Items]
Valuation allowance against a deferred tax asset related to net operating loss	$ 863,000	$ 366,000
Provision for federal income taxes	0
Undistributed earnings	22,100,000
Tansition tax provisions and other provisions of the internal revenue code	22,700,000
Accrued interest (approximate)	100,000	100,000
Penalties accrued	0	$ 0
German
Tax Credit Carryforward [Line Items]
Valuation allowance against a deferred tax asset related to net operating loss	500,000
State Tax Credits
Tax Credit Carryforward [Line Items]
Remaining tax credit carryforward	$ 400,000