Securities - Summary of securities in unrealized loss position (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Fair Value, Less than 12 Months	$ 3,902	$ 20,639
Gross Unrealized Losses, Less than 12 Months	(6)	(66)
Fair Value, 12 Months or Longer	5,070	31,824
Gross Unrealized Losses, 12 Months or Longer	(38)	(369)
Fair Value, Total	8,972	52,463
Gross Unrealized Losses, Total	(44)	(435)
Mortgage-backed securities - agency
Debt Securities, Available-for-sale [Line Items]
Fair Value, 12 Months or Longer		9,529
Gross Unrealized Losses, 12 Months or Longer		(90)
Fair Value, Total		9,529
Gross Unrealized Losses, Total		(90)
CMO's - agency
Debt Securities, Available-for-sale [Line Items]
Fair Value, Less than 12 Months	3,902	20,639
Gross Unrealized Losses, Less than 12 Months	(6)	(66)
Fair Value, 12 Months or Longer	5,070	22,295
Gross Unrealized Losses, 12 Months or Longer	(38)	(279)
Fair Value, Total	8,972	42,934
Gross Unrealized Losses, Total	$ (44)	$ (345)

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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