Income Taxes (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013 countries	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Line Items]
Number of countries in which operations constitute a taxable presence	19
Net decrease in valuation allowance	$ (10,400,000)
Net operating loss carryforwards	605,000,000
Net operating loss carryforwards, deferred tax asset	77,500,000
Net operating loss carryforwards, valuation allowance	49,800,000
Unrepatriated foreign earnings	700,000
Non-U.S. earnings that have been targeted for future repatriation	11,800,000
Foreign earnings expected to be distributed	7,400,000
Income tax expense recorded due to expected repatriation of foreign earnings	400,000
Accumulated undistributed earnings intended to remain permanently invested	369,000,000
Amounts of tax benefits that would affect effective tax rate if recognized	12,500,000
Recognized interest and penalties related to uncertain tax positions	(1,300,000)	(6,400,000)	1,100,000
Interest and penalties related to settlement of audits	(1,400,000)	(7,400,000)
Accrued interest and penalties related to uncertain tax positions	100,000	1,400,000
Estimated range of change, upper bound	0
Estimated range of change, lower bound	(5,700,000)
Unrecognized tax benefits	12,538,000	24,386,000	27,053,000	23,467,000
Taxes paid, net of refunds	29,400,000	15,100,000	13,700,000
Minimum [Member]
Income Tax Disclosure [Line Items]
Open tax years	2000
Maximum [Member]
Income Tax Disclosure [Line Items]
Open tax years	2013
Research [Member]
Income Tax Disclosure [Line Items]
Tax credit carryforward	6,900,000
Research [Member] | Minimum [Member]
Income Tax Disclosure [Line Items]
Tax credit carryforwards, expiration date	Jan. 01, 2024
Alternative Minimum Tax [Member]
Income Tax Disclosure [Line Items]
Tax credit carryforward	1,200,000
U.S. [Member]
Income Tax Disclosure [Line Items]
Net deferred tax asset	50,380,000	71,809,000
State and Local Jurisdiction [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	31,000,000
Non-U.S. [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards	16,800,000
Net deferred tax asset	16,133,000	7,376,000
Non-U.S. [Member] | Minimum [Member]
Income Tax Disclosure [Line Items]
Tax credit carryforwards, expiration date	Jan. 01, 2020
German Tax Authority [Member]
Income Tax Disclosure [Line Items]
Amounts of tax benefits that would affect effective tax rate if recognized	15,500,000
Unrecognized tax benefits	23,900,000
Payment to taxing authority to pursue litigation	16,400,000
Tax Attributes With Limited Lives [Member]
Income Tax Disclosure [Line Items]
Net deferred tax asset	$ 26,400,000