Income Taxes - Net Operating Loss Carryforwards (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Net operating loss carryforwards
Realized capital loss carryforward	$ 1,500	$ 2,600
U.S.
Net operating loss carryforwards
Net Operating Losses carried forward	400	16,800
Tax benefit related to net operating losses	357
U.S. | 2010
Net operating loss carryforwards
Tax benefit related to net operating losses	$ 357
Net Operating Loss expiration	Dec. 31, 2030
State and Local
Net operating loss carryforwards
Net Operating Losses carried forward	$ 17,000	$ 16,300