Securities - Securities Available for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized Cost	$ 317,874	$ 283,216
Gross Unrealized Gains	11,148	7,711
Gross Unrealized Losses	(2,727)	(1,050)
Fair Value	326,295	289,877
U.S. Treasury Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized Cost		4,990
Gross Unrealized Gains		8
Fair Value		4,998
Municipal Bonds
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized Cost	93,780	99,441
Gross Unrealized Gains	7,705	6,338
Gross Unrealized Losses	(763)	(36)
Fair Value	100,722	105,743
Mortgage-Backed Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized Cost	92,800	64,312
Gross Unrealized Gains	2,159	697
Gross Unrealized Losses	(335)	(281)
Fair Value	94,624	64,728
Corporate Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized Cost	55,258	49,674
Gross Unrealized Gains	898	633
Gross Unrealized Losses	(526)	(131)
Fair Value	55,630	50,176
SBA Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized Cost	44,599	50,126
Gross Unrealized Gains	19	35
Gross Unrealized Losses	(564)	(602)
Fair Value	44,054	49,559
Asset-Backed Securities
The amortized cost and estimated fair value of securities with gross unrealized gains and losses
Amortized Cost	31,437	14,673
Gross Unrealized Gains	367
Gross Unrealized Losses	(539)
Fair Value	$ 31,265	$ 14,673

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Amount 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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