Income Taxes Income Taxes (Deferred Tax Assets And Liabilities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Income Taxes [Abstract]
Deferred Tax Assets, Operating Loss Carryforwards	$ 9,596	$ 2,890
Deferred Tax Assets, Tax Credit Carryforwards	9,233	7,600
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Accrued Liabilities	1,196	821
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	1,423	1,028
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost	4,917	5,990
Deferred Tax Assets, Property, Plant and Equipment	1,266	0
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Impairment Losses	161	355
Deferred Tax Assets, Gain On Sale Of Intangible Assets	123	137
Deferred Tax Assets, Deferred Income	812	270
Deferred Tax Assets, State Taxes	1,451	1,534
Deferred Tax Assets, Gross	30,178	20,625
Deferred Tax Assets, Valuation Allowance	(8,493)	(5,918)
Deferred Tax Assets, Net of Valuation Allowance	21,685	14,707
Deferred Tax Liabilities, Property, Plant and Equipment	0	(84)
Deferred Tax Liabilities, Intangible Assets	(47,711)	(38,864)
Deferred Tax Liabilities, Prepaid Insurance	(369)	(224)
Deferred Tax Liabilities, Foreign Other	(6,359)	(5,018)
Deferred Tax Liabilities, Net	(54,439)	(44,190)
Deferred Tax Assets, Net	$ (32,754)	$ (29,483)