Stock-Based Compensation (Details) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation expense recognized		$ 6,545	$ 6,605	$ 5,276
Unrecognized Compensation Cost		$ 3,241
Expiration date of 2007 Stock Incentive Plan		May 20, 2024
Restricted stock units [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation expense recognized		$ 6,323	$ 6,396	$ 5,061
Unrecognized Compensation Cost		$ 3,241
Weighted Average Remaining Amortization Periods		8 months 12 days
Number of units [Abstract]
Balance (in shares)		877,000	793,000	842,000
Granted (in shares)		336,000	319,000	272,000
Vested (in shares)	[1]	(306,000)	(235,000)	(308,000)
Cancelled or forfeited (in shares)		(13,000)	0	(13,000)
Balance (in shares)		894,000	877,000	793,000
Expected to vest (in shares)		894,000	877,000	793,000
Weighted Average Grant-date Fair Value per Unit [Abstract]
Beginning balance, Weighted average grant-date fair value (in dollars per share)		$ 20.08	$ 18.9	$ 17.93
Granted, Weighted average grant-date fair value (in dollars per share)		19.13	22.07	18.3
Vested, Weighted average grant-date fair value (in dollars per share)	[1]	20.04	18.79	15.7
Cancelled or forfeited, Weighted average grant date fair value (in dollars per share)		20.5	0	19.06
Ending balance, Weighted average grant-date fair value (in dollars per share)		$ 19.73	$ 20.08	$ 18.9
Phantom Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Stock-based compensation expense recognized		$ 222	$ 209	$ 215
Unrecognized Compensation Cost		$ 0
Weighted Average Remaining Amortization Periods		0 years
Number of units [Abstract]
Balance (in shares)		212,000	198,000	183,000
Granted (in shares)		10,000	10,000	10,000
Dividend equivalents issued (in shares)		4,000	4,000	5,000
Balance (in shares)		226,000	212,000	198,000
Weighted Average Grant-date Fair Value per Unit [Abstract]
Granted, Weighted average grant-date fair value (in dollars per share)		$ 22.2	$ 20.89	$ 21.49
Performance Vested Restricted Stock Units [Member] | Scheduled to Vest January 1, 2023 [Member]
Number of units [Abstract]
Balance (in shares)	[2]	152,000
Expected to vest (in shares)	[2]	152,000
Not expected to vest (in shares)	[2]	0
Performance Vested Restricted Stock Units [Member] | Scheduled to Vest January 1, 2024 [Member]
Number of units [Abstract]
Balance (in shares)		165,000
Expected to vest (in shares)		165,000
Not expected to vest (in shares)		0
Performance Vested Restricted Stock Units [Member] | Scheduled to Vest January 1, 2025 [Member]
Number of units [Abstract]
Balance (in shares)		168,000
Expected to vest (in shares)		168,000
Not expected to vest (in shares)		0
2007 Stock Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award
Maximum number of shares authorized under restricted stock, unrestricted stock, RSU's and stock options to officers, employees and non-employee directors (in shares)		6,500,000
Exercisable (in shares)
Available for future grants (in shares)		1,637,000

[1] The number of RSUs vested includes shares that the Company withheld on behalf of employees to satisfy statutory tax withholding requirements.

[2] The performance vesting criteria for the performance-based RSUs with a vesting date of January 1, 2023 were achieved.