Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Income Tax Disclosure [Abstract]
Effective Income Tax Rate, Percent	29.30%	37.70%
Valuation Allowance [Abstract]
Valuation Allowance, Amount	$ 0		$ 0
Income Tax Uncertainties [Abstract]
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	6,800		7,300
Unrecognized Tax Benefits, Period Increase (Decrease)	(800)	$ (500)
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	3,900		$ 4,700
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	(750)	$ (500)
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Lower Bound	(1,900)
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance beginning of period	11,569
Additions based on tax positions related to current year	189
Additions for tax positions of prior years	0
Reductions for tax positions of prior years	(108)
Reductions due to lapse of applicable statute of limitations	(928)
Settlements	0
Balance end of period	10,722
Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit	$ (2,900)