Securities Available For Sale - Contractual Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Contractual Maturities, Amortized Cost
Within one year	$ 20,500	$ 23,250
After one through five years	287,914	226,748
After ten years	5,298	5,309
Amortized Costs, Gross	313,712	255,307
Amortized Costs, Net	337,854	289,664
Contractual Maturities, Fair Value
Within one year	20,563	23,233
After one through five years	288,337	226,783
After ten years	5,669	5,659
Fair Value, Gross	314,569	255,675
Available-for-sale Securities, Debt Securities, Total	339,053	290,243
Mortgage-backed - Government-sponsored entity (GSE) - residential
Contractual Maturities, Amortized Cost
Amortized Costs, Mortgage-backed - Government-sponsored entity (GSE) - residential	24,142	34,357
Amortized Costs, Net	24,142	34,357
Contractual Maturities, Fair Value
Fair Value, Mortgage-backed - Government-sponsored entity (GSE) - residential	24,484	34,568
Available-for-sale Securities, Debt Securities, Total	$ 24,484	$ 34,568

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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
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