Stock Compensation (Shares Authorized under Stock Option Plans by Exercise Price Range) (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($) $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding (in shares) | shares	3,822,819
Outstanding, Weighted Average Remaining Contractual Life	4 years 7 months 6 days
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.40
Options Exercisable (in shares) | shares	2,540,150
Options Exercisable, Weighted Average Remaining Contractual Life	3 years 4 months 24 days
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 14.84
Options Exercisable, Aggregate Intrinsic Value | $	$ 487
Exercise Price Range One
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum (in dollars per share)	$ 9.86
Range of Exercise Prices, Maximum (in dollars per share)	$ 11.83
Options Outstanding (in shares) | shares	1,462,190
Outstanding, Weighted Average Remaining Contractual Life	3 years 9 months 18 days
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 11.32
Options Exercisable (in shares) | shares	1,055,315
Options Exercisable, Weighted Average Remaining Contractual Life	2 years 2 months 12 days
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 11.47
Options Exercisable, Aggregate Intrinsic Value | $	$ 0
Exercise Price Range Two
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum (in dollars per share)	$ 11.83
Range of Exercise Prices, Maximum (in dollars per share)	$ 13.80
Options Outstanding (in shares) | shares	0
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 0
Options Exercisable (in shares) | shares	0
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 0
Options Exercisable, Aggregate Intrinsic Value | $	$ 0
Exercise Price Range Three
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum (in dollars per share)	$ 13.80
Range of Exercise Prices, Maximum (in dollars per share)	$ 15.77
Options Outstanding (in shares) | shares	519,278
Outstanding, Weighted Average Remaining Contractual Life	3 years 4 months 24 days
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 14.68
Options Exercisable (in shares) | shares	519,278
Options Exercisable, Weighted Average Remaining Contractual Life	3 years 4 months 24 days
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 14.68
Options Exercisable, Aggregate Intrinsic Value | $	$ 0
Exercise Price Range Four
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum (in dollars per share)	$ 15.77
Range of Exercise Prices, Maximum (in dollars per share)	$ 17.74
Options Outstanding (in shares) | shares	0
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 0
Options Exercisable (in shares) | shares	0
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 0
Options Exercisable, Aggregate Intrinsic Value | $	$ 0
Exercise Price Range Five
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Range of Exercise Prices, Minimum (in dollars per share)	$ 17.74
Range of Exercise Prices, Maximum (in dollars per share)	$ 19.71
Options Outstanding (in shares) | shares	1,841,351
Outstanding, Weighted Average Remaining Contractual Life	5 years 7 months 6 days
Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 18.84
Options Exercisable (in shares) | shares	965,557
Options Exercisable, Weighted Average Remaining Contractual Life	4 years 8 months 12 days
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 18.61
Options Exercisable, Aggregate Intrinsic Value | $	$ 0