Income Taxes Income Taxes - Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Long term deferred tax liabilities	$ 248,700	$ 256,400
Valuation allowance, amount	8,648	7,858
Valuation allowance, deferred tax asset, change in amount	1,400
Unrecognized tax benefits, income tax penalties and interest accrued	4,300	3,400
Unrecognized tax benefits, net of associated tax assets and excluding federal tax benefit of state taxes, interest and penalties recorded in Other Liabilities	32,800	27,800
Asset associated with uncertain tax position recorded in Other Assets	16,500	16,100
Unrecognized tax benefits would impact effective tax rate	15,800	11,800
Undistributed earnings from foreign earnings	41,600
Deferred tax liability related to undistributed earnings from foreign earnings If the earnings of foreign subsidiaries were not indefinitely reinvested	14,500
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities	0	$ 50
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	21,500
Net operating loss carryforward subject to expiration	$ 9,700
Foreign Tax Authority [Member] | Minimum [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration year	2016
Foreign Tax Authority [Member] | Maximum [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration year	2026
State and Local Jurisdiction
Income Taxes [Line Items]
Net operating loss carryforwards	$ 4,900
State and Local Jurisdiction | Minimum [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration year	2023
State and Local Jurisdiction | Maximum [Member]
Income Taxes [Line Items]
Net operating loss carryforwards, expiration year	2034
Deferred Tax Asset, Operating Loss Carryforwards, Domestic
Income Taxes [Line Items]
Valuation allowance, amount	$ 8,600