Significant Accounting Policies - Narrative (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 12, 2022	Jul. 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Accounting Policies [Abstract]
Common stock, shares authorized (in shares)			32,000,000		32,000,000		32,000,000
Common stock, par value (in dollars per share)			$ 0.01		$ 0.01		$ 0.01
Common stock, shares issued (in shares)			24,454,377		24,454,377		24,592,098
Common stock, shares outstanding (in shares)			24,454,377		24,454,377		24,592,098
Preferred stock, shares authorized (in shares)			8,000,000		8,000,000		8,000,000
Issued shares of preferred stock (in shares)			0		0		0
Outstanding shares of preferred stock (in shares)			0		0		0
Common stock dividends declared (in dollars per share)		$ 0.60	$ 0.60	$ 0.60	$ 1.80	$ 1.80
Common stock dividends paid (in dollars per share)	$ 0.60
Accumulated other comprehensive income (loss) net of tax			$ (66,369,000)		$ (66,369,000)		$ 9,203,000
Tax from unrealized gains and losses on marketable securities					100,000		$ 200,000
Reclassifications from AOCI			$ 0	$ 0	$ 0	$ 0