Income Taxes (Components of Income Tax Expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current Income Tax Expense (Benefit) [Abstract]
Federal	$ 1,335	$ 266	$ 342
State	270	167	320
Foreign	4,847	4,532	3,660
Current income tax provision	6,452	4,965	4,322
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal	1,118	(632)	2,382
State	43	(351)	31
Foreign	(263)	(760)	(1,557)
Deferred income tax provision	898	(1,743)	856
Provision for income taxes from ongoing operations at effective tax rate	7,350	3,222	5,178
Provision for income taxes from discrete items	6,544	7,656	2,282
Total provision for income taxes	13,894	10,878	7,460
Certain discrete tax impacts from foreign subsidiaries [Member]
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Provision for income taxes from discrete items	(1,677)	839	837
Net operating loss carryforwards (NOL) [Member]
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Provision for income taxes from discrete items	(810)	0	0
IRS Settlement – net of FIN 48 reserve reversals [Member]
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Provision for income taxes from discrete items	480	0	0
2013 Income tax return amendment [Member]
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Provision for income taxes from discrete items	1,891	0	0
FIN 48 reserve additions [Member]
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Provision for income taxes from discrete items	9,798	6,817	2,745
Reconciliation of the tax payable liability accounts for our various subsidiaries to the income tax returns filed in those jurisdictions [Member]
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract]
Provision for income taxes from discrete items	$ (3,138)	$ 0	$ (1,300)