Investments - Schedule Of Amortized Costs And Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	$ 34,851	[1]	$ 9,070	[1]
Fair Value	34,768		9,055
Accumulated Unrealized Gains Losses On Available For Sale Securities Before Tax	(83)		(15)
Short-Term Bond Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	24,000	[1]	8,000
Fair Value	23,917		7,985
Accumulated Unrealized Gains Losses On Available For Sale Securities Before Tax	(83)		(15)
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	1,101	[1]	1,070	[1]
Fair Value	1,101		1,070
Other Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	9,750	[1]	0	[1]
Fair Value	$ 9,750		$ 0

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