Income Taxes (Other Disclosure) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Loss Carryforwards [Line Items]
Valuation Allowance, Deferred Tax Asset, Change in Amount	$ (3,600,000)
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	6,100,000	16,600,000	8,700,000
Tax benefit (detriment) related to equity compensation plans	(1,376,000)	5,130,000	816,000
Deferred Taxes, Business Combination, Valuation Allowance, Available to Reduce Goodwill and Intangible Assets	0
Federal Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	6,100,000
State Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	162,900,000
Additional Paid-In Capital [Member]
Operating Loss Carryforwards [Line Items]
Tax benefit (detriment) related to equity compensation plans	$ (1,376,000)	$ 5,130,000	$ 816,000