Securities (Schedule of Securities by Contractual Maturity) (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Securities Available-for-Sale: Amortized cost
Due in one year or less	$ 2,332
Due after one year through five years	16,151
Due after five years through ten years	73,764
Due after ten years	197,806
Amortized Cost	825,967	$ 821,254
Securities Available-for-Sale: Fair Value
Due in one year or less	2,343
Due after one year through five years	16,531
Due after five years through ten years	76,979
Due after ten years	207,431
Fair Value	840,692	812,611
MBS/CMO - Residential
Securities Available-for-Sale: Amortized cost
Amortized cost, MBS/CMO - Residential	535,914
Amortized Cost	535,914	529,805
Securities Available-for-Sale: Fair Value
Fair value, MBS/CMO - Residential	537,408
Fair Value	$ 537,408	$ 518,078

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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