Investments In Securities (Schedule of Other Investments) (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2019	Dec. 31, 2018
Other Equity Investments
Beginning of period	$ 6,589	$ 5,439
Amounts Impaired	0	0
Observable Changes	0	0
Purchases and Additional Commitments Paid	1,306	1,486
Sales, Returns of Capital and Other Reductions	(835)	(336)
End of period	$ 7,060	$ 6,589