Securities - Summary of reconciliation of amortized cost to fair value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 136,140	$ 145,879
Gross Unrealized Gains	2,046	975
Gross Unrealized Losses	(61)	(435)
Fair Value	138,125	146,419
Mortgage-backed securities – agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	23,697	24,603
Gross Unrealized Gains	997	524
Gross Unrealized Losses		(90)
Fair Value	24,694	25,037
CMO's - agency
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	112,443	121,276
Gross Unrealized Gains	1,049	451
Gross Unrealized Losses	(61)	(345)
Fair Value	$ 113,431	$ 121,382

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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-Publisher FASB
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-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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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).

+ References

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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
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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).

+ References

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