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Investment Securities - Schedule of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized cost	$ 356,059	$ 393,631
Gross unrealized gains	7,266	829
Gross unrealized losses	(327)	(6,115)
Estimated fair value	362,998	388,345
U.S. Treasury Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	2,300	1,999
Gross unrealized gains	16
Gross unrealized losses		(28)
Estimated fair value	2,316	1,971
U.S. Federal Agency Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	4,015	10,370
Gross unrealized gains	91	32
Gross unrealized losses		(41)
Estimated fair value	4,106	10,361
Municipal Obligations, Tax Exempt [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	142,391	161,529
Gross unrealized gains	3,513	353
Gross unrealized losses	(42)	(2,770)
Estimated fair value	145,862	159,112
Municipal Obligations, Taxable [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	45,541	53,178
Gross unrealized gains	1,293	180
Gross unrealized losses	(55)	(323)
Estimated fair value	46,779	53,035
Agency Mortgage-backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	159,908	158,765
Gross unrealized gains	2,353	264
Gross unrealized losses	(230)	(2,953)
Estimated fair value	162,031	156,076
Certificates of Deposit [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	1,904	7,790
Gross unrealized gains
Gross unrealized losses
Estimated fair value	$ 1,904	$ 7,790

X

- Definition

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

+ References

No definition available.

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- Definition

Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

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- Definition

Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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