Stock-Based Compensation (Details 2)	12 Months Ended
	Dec. 31, 2020 $ / shares shares
$20.69 to $26.59
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares (in shares) | shares	11,600
Options Outstanding, Average Remaining Life (Years)	1 year 2 months 26 days
Options Outstanding, Average Exercise Price (in dollars per share)	$ 24.93
Options Exercisable, Number of Shares (in shares) | shares	11,600
Options Exercisable, Average Exercise Price (in dollars per share)	$ 24.93
Range of Exercise Prices, Lower Range Limit (in dollars per share)	20.69
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 26.59
$30.71 to $36.31
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares (in shares) | shares	197,905
Options Outstanding, Average Remaining Life (Years)	4 years 8 months 19 days
Options Outstanding, Average Exercise Price (in dollars per share)	$ 33.49
Options Exercisable, Number of Shares (in shares) | shares	197,905
Options Exercisable, Average Exercise Price (in dollars per share)	$ 33.49
Range of Exercise Prices, Lower Range Limit (in dollars per share)	30.71
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 36.31
$37.13 to $47.04
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares (in shares) | shares	124,423
Options Outstanding, Average Remaining Life (Years)	5 years 9 months 10 days
Options Outstanding, Average Exercise Price (in dollars per share)	$ 45.52
Options Exercisable, Number of Shares (in shares) | shares	118,999
Options Exercisable, Average Exercise Price (in dollars per share)	$ 45.90
Range of Exercise Prices, Lower Range Limit (in dollars per share)	37.13
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 47.04
$58.92 to $59.46
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares (in shares) | shares	124,194
Options Outstanding, Average Remaining Life (Years)	7 years 2 months 23 days
Options Outstanding, Average Exercise Price (in dollars per share)	$ 59.26
Options Exercisable, Number of Shares (in shares) | shares	71,992
Options Exercisable, Average Exercise Price (in dollars per share)	$ 59.25
Range of Exercise Prices, Lower Range Limit (in dollars per share)	58.92
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 59.46
$60.72 to $66.10
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Options Outstanding, Number of Shares (in shares) | shares	187,483
Options Outstanding, Average Remaining Life (Years)	8 years 3 months 14 days
Options Outstanding, Average Exercise Price (in dollars per share)	$ 63.38
Options Exercisable, Number of Shares (in shares) | shares	45,420
Options Exercisable, Average Exercise Price (in dollars per share)	$ 61.49
Range of Exercise Prices, Lower Range Limit (in dollars per share)	60.72
Range of Exercise Prices, Upper Range Limit (in dollars per share)	$ 66.10