Income Taxes (Rollforward of Valuation Allowances) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Operating Loss Carryforwards		$ 13,700
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowance at beginning of the year	$ 1,063	1,346
Expiration of state net operating losses	(1,063)	(283)
Valuation allowance at end of the year	$ 0	$ 1,063