Securities - Securities in Unrealized Loss Position (Details) $ in Thousands	Jun. 30, 2021 USD ($) security	Dec. 31, 2020 USD ($) security
Available for sale:
Available for sale, Total number in a loss position \| security	6	9
Available for sale, Less than 12 months, Estimated fair value	$ 2,396	$ 4,793
Available for sale, Less than 12 months, Unrealized loss	(104)	(20)
Available for sale, 12 months and greater, Estimated fair value	7,892	9,157
Available for sale, 12 Months and greater Unrealized loss	(660)	(1,098)
Available for sale, Estimated fair value	10,288	13,950
Available for sale, Unrealized loss	$ (764)	$ (1,118)
Corporate and other securities
Available for sale:
Available for sale, Total number in a loss position \| security	6	9
Available for sale, Less than 12 months, Estimated fair value	$ 2,396	$ 4,793
Available for sale, Less than 12 months, Unrealized loss	(104)	(20)
Available for sale, 12 months and greater, Estimated fair value	7,892	9,157
Available for sale, 12 Months and greater Unrealized loss	(660)	(1,098)
Available for sale, Estimated fair value	10,288	13,950
Available for sale, Unrealized loss	$ (764)	$ (1,118)

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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), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922890-210455

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-Publisher FASB
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Amount of accumulated unrealized loss on 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 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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- Definition

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 less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 7
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27337-111563

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Amount of accumulated unrealized loss on 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 less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

+ References

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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), in unrealized loss position without allowance for credit loss.

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

+ References

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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