Securities Available for Sale - Continuous loss (Details) $ in Thousands	Jun. 30, 2021 USD ($) position	Dec. 31, 2020 USD ($) position
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	$ 118,942	$ 26,678
Unrealized Losses, Less than 12 months	(1,883)	(855)
Fair Value, 12 months or longer	4,894	6,052
Unrealized Losses, 12 months or longer	(68)	(118)
Fair Value	123,836	32,730
Unrealized Losses	$ (1,951)	$ (973)
Number of positions with unrealized losses \| position	109	55
U.S. agency residential mortgage-backed securities
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	$ 65,621
Unrealized Losses, Less than 12 months	(1,033)
Fair Value, 12 months or longer	0
Unrealized Losses, 12 months or longer	0
Fair Value	65,621
Unrealized Losses	(1,033)
Asset-backed securities related to Structured Program transactions
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	0	$ 26,678
Unrealized Losses, Less than 12 months	0	(855)
Fair Value, 12 months or longer	4,894	6,052
Unrealized Losses, 12 months or longer	(68)	(118)
Fair Value	4,894	32,730
Unrealized Losses	(68)	$ (973)
Other asset-backed securities
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	9,989
Unrealized Losses, Less than 12 months	(25)
Fair Value, 12 months or longer	0
Unrealized Losses, 12 months or longer	0
Fair Value	9,989
Unrealized Losses	(25)
Commercial mortgage-backed securities
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	26,270
Unrealized Losses, Less than 12 months	(259)
Fair Value, 12 months or longer	0
Unrealized Losses, 12 months or longer	0
Fair Value	26,270
Unrealized Losses	(259)
U.S. agency securities
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	15,399
Unrealized Losses, Less than 12 months	(554)
Fair Value, 12 months or longer	0
Unrealized Losses, 12 months or longer	0
Fair Value	15,399
Unrealized Losses	(554)
Municipal securities
Schedule of Securities Available-for-sale [Line Items]
Fair Value, Less than 12 months	1,663
Unrealized Losses, Less than 12 months	(12)
Fair Value, 12 months or longer	0
Unrealized Losses, 12 months or longer	0
Fair Value	1,663
Unrealized Losses	$ (12)

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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