Investment Securities - Gross unrealized losses (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Investment securities available-for-sale
Unrealized losses less than 12 months	$ (313)	$ (91)
Fair value less than 12 months	46,067	20,875
Unrealized losses over 12 months	(162)	(5,123)
Fair value over 12 months	36,019	198,038
Total Unrealized losses	(475)	(5,214)
Total Fair value	82,086	218,913
U.S. treasury and government agencies
Investment securities available-for-sale
Unrealized losses less than 12 months	(5)	(8)
Fair value less than 12 months	1,740	5,288
Unrealized losses over 12 months	(10)	(214)
Fair value over 12 months	9,990	11,598
Total Unrealized losses	(15)	(222)
Total Fair value	11,730	16,886
Obligations of state and political agencies
Investment securities available-for-sale
Unrealized losses less than 12 months	(140)
Fair value less than 12 months	11,959	389
Unrealized losses over 12 months	(21)	(1,446)
Fair value over 12 months	5,798	55,770
Total Unrealized losses	(161)	(1,446)
Total Fair value	17,757	56,159
Mortgage backed securities - Residential Agency
Investment securities available-for-sale
Unrealized losses less than 12 months	(52)	(44)
Fair value less than 12 months	17,131	7,352
Unrealized losses over 12 months	(79)	(3,074)
Fair value over 12 months	14,036	112,293
Total Unrealized losses	(131)	(3,118)
Total Fair value	31,167	119,645
Mortgage backed securities - Commercial
Investment securities available-for-sale
Unrealized losses less than 12 months	(116)	(39)
Fair value less than 12 months	15,235	7,844
Unrealized losses over 12 months	(52)	(264)
Fair value over 12 months	6,195	9,741
Total Unrealized losses	(168)	(303)
Total Fair value	21,430	17,585
Asset backed securities
Investment securities available-for-sale
Fair value less than 12 months	2	2
Unrealized losses over 12 months		(4)
Fair value over 12 months		155
Total Unrealized losses		(4)
Total Fair value	$ 2	157
Corporate bonds
Investment securities available-for-sale
Unrealized losses over 12 months		(121)
Fair value over 12 months		8,481
Total Unrealized losses		(121)
Total Fair value		$ 8,481

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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