Significant Accounting Policies - Narrative (Details) - USD ($)		1 Months Ended	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 06, 2022	Apr. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 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)			24,637,268		24,637,268		24,592,098
Common stock, shares outstanding (in shares)			24,637,268		24,637,268		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	$ 1.20	$ 1.20
Common stock dividends paid (in dollars per share)	$ 0.60
Accumulated other comprehensive income (loss) net of tax			$ (28,009,000)		$ (28,009,000)		$ 9,203,000
Tax from unrealized gains and losses on marketable securities					(100,000)		$ 200,000
Reclassifications from AOCI			$ 0	$ 0	$ 0	$ 0