Investment Securities, Available-for-sale Securities, Maturities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Amortized Cost [Abstract]
Due in one year or less	$ 14,239
Due in one year through five years	110,975
Due after five years through ten years	5,009
Amortized Cost	478,278	$ 429,360
Fair Value [Abstract]
Due in one year or less	14,466
Due in one year through five years	110,485
Due after five years through ten years	5,009
Fair Value	482,815	439,071
Mortgage-Backed Securities and Collateralized Mortgage Obligations - Residential [Member]
Amortized Cost [Abstract]
Securities, amortized cost	312,051
Amortized Cost	312,052	308,432
Fair Value [Abstract]
Securities, fair value	315,656
Fair Value	315,656	316,158
Small Business Administration-Guaranteed Participation Securities [Member]
Amortized Cost [Abstract]
Securities, amortized cost	36,004
Amortized Cost	36,004	40,955
Fair Value [Abstract]
Securities, fair value	37,199
Fair Value	$ 37,199	$ 42,217

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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