Investment Securities Debt Securities- Continuous Loss Position (Details) $ in Thousands	Mar. 31, 2020 USD ($) investments	Dec. 31, 2019 USD ($) investments
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 19,082	$ 53,290
Debt Securities, temporarily impaired, less than 12 months, unrealized loss	304	397
Debt securities, temporarily impaired, 12 months or longer, fair value	0	5,060
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	0	70
Debt securities, temporarily impaired, fair value	19,082	58,350
Debt securities, temporarily impaired, unrealized loss	$ 304	$ 467
Number of debt securities in loss positions \| investments	28	26
Residential federal agency MBS
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 9,392	$ 36,464
Debt Securities, temporarily impaired, less than 12 months, unrealized loss	47	263
Debt securities, temporarily impaired, 12 months or longer, fair value	0	5,060
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	0	70
Debt securities, temporarily impaired, fair value	9,392	41,524
Debt securities, temporarily impaired, unrealized loss	$ 47	$ 333
Number of debt securities in loss positions \| investments	3	11
Taxable municipal securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 6,804	$ 16,826
Debt Securities, temporarily impaired, less than 12 months, unrealized loss	237	134
Debt securities, temporarily impaired, 12 months or longer, fair value	0	0
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	0	0
Debt securities, temporarily impaired, fair value	6,804	16,826
Debt securities, temporarily impaired, unrealized loss	$ 237	$ 134
Number of debt securities in loss positions \| investments	7	15
Tax-exempt municipal securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 582
Debt Securities, temporarily impaired, less than 12 months, unrealized loss	1
Debt securities, temporarily impaired, 12 months or longer, fair value	0
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	0
Debt securities, temporarily impaired, fair value	582
Debt securities, temporarily impaired, unrealized loss	$ 1
Number of debt securities in loss positions \| investments	1
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Debt Securities, temporarily impaired, Less than 12 Months, fair value	$ 2,304
Debt Securities, temporarily impaired, less than 12 months, unrealized loss	19
Debt securities, temporarily impaired, 12 months or longer, fair value	0
Debt securities, temporarily impaired, 12 months or longer, unrealized loss	0
Debt securities, temporarily impaired, fair value	2,304
Debt securities, temporarily impaired, unrealized loss	$ 19
Number of debt securities in loss positions \| investments	17

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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