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Securities - Schedule of Amortized Cost of Securities and Their Approximate Fair Values (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Available for sale securities:
Available for sale securities, Amortized Cost	$ 337,988	$ 251,381
Available for sale securities, Gross Unrealized Gains	572	658
Available for sale securities, Gross Unrealized Losses	(2,137)	(1,436)
Available for sale securities, Fair Value	336,423	250,603
Held to maturity securities:
Held to maturity securities, Amortized Cost	8,487	8,557
Held to maturity securities, Fair Value	7,326	7,527
U.S. Government Agency Obligations
Available for sale securities:
Available for sale securities, Amortized Cost	93,500	110,531
Available for sale securities, Gross Unrealized Gains	9	76
Available for sale securities, Gross Unrealized Losses	(861)	(717)
Available for sale securities, Fair Value	92,648	109,890
U.S. Treasury Notes
Available for sale securities:
Available for sale securities, Amortized Cost	1,956	1,940
Available for sale securities, Gross Unrealized Losses	(24)	(6)
Available for sale securities, Fair Value	1,932	1,934
Mortgage-backed Securities, Residential
Available for sale securities:
Available for sale securities, Amortized Cost	39,971	33,537
Available for sale securities, Gross Unrealized Gains	222	306
Available for sale securities, Gross Unrealized Losses	(457)	(180)
Available for sale securities, Fair Value	39,736	33,663
Asset Backed Securities
Available for sale securities:
Available for sale securities, Amortized Cost	10,165	11,883
Available for sale securities, Gross Unrealized Gains	11	47
Available for sale securities, Gross Unrealized Losses	(31)	(85)
Available for sale securities, Fair Value	10,145	11,845
State and Municipal
Available for sale securities:
Available for sale securities, Amortized Cost	118,826	74,684
Available for sale securities, Gross Unrealized Gains	175	150
Available for sale securities, Gross Unrealized Losses	(550)	(443)
Available for sale securities, Fair Value	118,451	74,391
Corporate Bonds
Available for sale securities:
Available for sale securities, Amortized Cost	68,804	15,271
Available for sale securities, Gross Unrealized Gains	150	52
Available for sale securities, Gross Unrealized Losses	(167)	(3)
Available for sale securities, Fair Value	68,787	15,320
SBA Pooled Securities
Available for sale securities:
Available for sale securities, Amortized Cost	4,766	3,535
Available for sale securities, Gross Unrealized Gains	5	27
Available for sale securities, Gross Unrealized Losses	(47)	(2)
Available for sale securities, Fair Value	4,724	3,560
CLO Securities
Held to maturity securities:
Held to maturity securities, Amortized Cost	8,487	8,557
Held to maturity securities, Gross Unrealized Losses	(1,161)	(1,030)
Held to maturity securities, Fair Value	$ 7,326	$ 7,527

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on 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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