Investments (Held-To-Maturity Securities Disclosure) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 44,632	$ 42,150
Net Unrealized Gains (Losses)	(50)	(21)
HTM, Carrying Value	44,582	42,129
Unrecognized Holding Gains	1,658	2,026
Unrecognized Holding Losses	0	(55)
Held-to-maturity securities, fair value	46,240	44,100
Obligations of States and Political Subdivisions [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	21,834	25,154
Net Unrealized Gains (Losses)	36	84
HTM, Carrying Value	21,870	25,238
Unrecognized Holding Gains	526	1,023
Unrecognized Holding Losses	0	0
Held-to-maturity securities, fair value	22,396	26,261
Corporate Securities [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	22,798	16,996
Net Unrealized Gains (Losses)	(86)	(105)
HTM, Carrying Value	22,712	16,891
Unrecognized Holding Gains	1,132	1,003
Unrecognized Holding Losses	0	(55)
Held-to-maturity securities, fair value	$ 23,844	$ 17,839