Equity-Based Compensation (Summary of Ranges of Outstanding and Exercisable Options) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	277,224	458,349	569,319	622,124
Weighted Average Remaining Contractual Life (in years)	4 years 7 days
Weighted Average Exercise Price	$ 19.08	$ 15.13	$ 11.18
Options Exercisable	239,724
$8.90 – $8.90
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	$ 8.90
Exercise Price Range, Upper Range Limit	$ 8.90
Options Outstanding	36,500
Weighted Average Remaining Contractual Life (in years)	3 years 8 months 12 days
Weighted Average Exercise Price	$ 8.90
Options Exercisable	36,500
Weighted Average Exercise Price	$ 8.90
$9.74 – $9.74
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	9.74
Exercise Price Range, Upper Range Limit	$ 9.74
Options Outstanding	95,441
Weighted Average Remaining Contractual Life (in years)	4 years 8 months 12 days
Weighted Average Exercise Price	$ 9.74
Options Exercisable	95,441
Weighted Average Exercise Price	$ 9.74
$11.89 – $18.78
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	11.89
Exercise Price Range, Upper Range Limit	$ 18.78
Options Outstanding	70,783
Weighted Average Remaining Contractual Life (in years)	1 year 10 months 6 days
Weighted Average Exercise Price	$ 15.78
Options Exercisable	70,783
Weighted Average Exercise Price	$ 15.78
$20.52 – $23.78
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	20.52
Exercise Price Range, Upper Range Limit	$ 23.78
Options Outstanding	37,000
Weighted Average Remaining Contractual Life (in years)	1 year 8 months 9 days
Weighted Average Exercise Price	$ 22.16
Options Exercisable	37,000
Weighted Average Exercise Price	$ 22.16
$23.79 - $25.44
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price Range, Lower Range Limit	23.79
Exercise Price Range, Upper Range Limit	$ 25.44
Options Outstanding	37,500
Weighted Average Remaining Contractual Life (in years)	9 years
Weighted Average Exercise Price	$ 25.44
Options Exercisable	0
Weighted Average Exercise Price	$ 0