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Summary of Significant Accounting Policies - Originated Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Originated Loans and Allowance for Loan Losses
Non-accrual Status Collection Days Past Due	90 days
Recorded Investment	$ 4,350	$ 5,450
Performing | Maximum
Originated Loans and Allowance for Loan Losses
Threshold for classification as performing loans	90 days
Non-Performing | Minimum
Originated Loans and Allowance for Loan Losses
Threshold for classification as performing loans	90 days

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Period of time past contractual due date after which loans are generally placed on non-accrual status.

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Period of time past due which is used as a threshold for classification of loans as performing or non-performing.

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Amount of financing receivable modified as troubled debt restructuring.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953676-111524

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=118939409&loc=d3e18845-111554

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