Securities (Securities by Contractual Maturity) (Details) $ in Thousands	Jun. 30, 2020 USD ($)
Schedule of Available for Sale and Held to Maturty Securities [Line Items]
Available for sale debt securities maturities within 1 year amortized cost	$ 108,361
Available for sale debt securities maturities 1-5 years amortized cost	320,989
Available for sale debt securities maturities 5-10 years amortized cost	315,206
Available for sale debt securities maturities after 10 years amortized cost	175,297
Available for sale debt securities maturities total amortized cost	919,853
Available for sale debt securities maturities within 1 year fair value	111,419
Available for sale debt securities maturities 1-5 years fair value	329,271
Available for sale debt securities maturities 5-10 years fair value	319,219
Available for sale debt securities maturities after 10 years fair value	178,537
Available for sale debt securities fair value	$ 938,446

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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