Employee Benefit Plans (Schedule of Restricted Stock Plan) (Details) - 2008 Restricted Stock Plan [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Shares
Balance	125	132	132
Granted	18	22	22
Vested	(28)	(27)	(20)
Forfeited	(18)	(2)	(2)
Amortization of Compensation Expense
Balance	97	125	132
Unearned compensation
Balance	$ 1,638	$ 1,785	$ 1,764
Granted	975	827	799
Forfeited		(18)	(54)
Amortization of Compensation Expense	(907)	(956)	(724)
Balance	$ 1,706	$ 1,638	$ 1,785
Weighted Average Grant Price
Granted	$ 55.99	$ 36.53	$ 36.95