Summary of Significant Accounting Policies - Narrative (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) segment revenue_stream	Dec. 31, 2021 USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Number of reportable operating segment | segment	1
Restricted cash	$ 0	$ 0
Individual review of impairment of unpaid principal balances in excess of	1,000,000
Aggregate credit exposure threshold	1,000,000
Unamortized amount of investments	15,100,000	16,600,000
Other real estate owned ("OREO")	$ 8,900,000	$ 9,500,000
Number of revenue streams | revenue_stream	2
Payment terms with vendor	45 days
U.S. government sponsored agencies
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Loss given default	0.00%
Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated lives	7 years
Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated lives	10 years