Investments -Summary of Aggregate Fair Value and Gross Unrealized Loss by Length of Time (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value
Less Than 12 Months	$ 6,766	$ 1,632
12 Months or Longer	1,538	402
Total	8,304	2,034
Unrealized Loss
Less Than 12 Months	(957)	(13)
12 Months or Longer	(474)	(12)
Total	(1,431)	(25)
Fair Value
Less Than 12 Months	1,810
12 Months or Longer	0
Total	1,810
Unrealized Loss
Less Than 12 Months	(388)
12 Months or Longer	0
Total	(388)
Treasury bills
Fair Value
Less Than 12 Months	1,594
12 Months or Longer	0
Total	1,594
Unrealized Loss
Less Than 12 Months	(2)
12 Months or Longer	0
Total	(2)
Municipal bonds
Fair Value
Less Than 12 Months	2,506	1,632
12 Months or Longer	1,246	0
Total	3,752	1,632
Unrealized Loss
Less Than 12 Months	(641)	(13)
12 Months or Longer	(388)	0
Total	(1,029)	(13)
Fair Value
Less Than 12 Months	536
12 Months or Longer	0
Total	536
Unrealized Loss
Less Than 12 Months	(169)
12 Months or Longer	0
Total	(169)
Agency mortgage-backed securities
Fair Value
Less Than 12 Months	2,666	0
12 Months or Longer	292	402
Total	2,958	402
Unrealized Loss
Less Than 12 Months	(314)	0
12 Months or Longer	(86)	(12)
Total	(400)	$ (12)
Fair Value
Less Than 12 Months	1,274
12 Months or Longer	0
Total	1,274
Unrealized Loss
Less Than 12 Months	(219)
12 Months or Longer	0
Total	$ (219)