Investments - Schedule Of Amortized Costs And Fair Value (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	$ 10,265	[1]	$ 10,246	[1]
Fair Value	10,254		10,231
Accumulated Unrealized Gains Losses On Available For Sale Securities Before Tax	(11)		(15)
Short-Term Bond Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	8,000	[1]	8,000
Fair Value	7,989		7,985
Accumulated Unrealized Gains Losses On Available For Sale Securities Before Tax	(11)		(15)
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	1,644	[1]	1,634	[1]
Fair Value	1,644		1,634
Other Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Cost Basis	621	[1]	612	[1]
Fair Value	$ 621		$ 612

[1] The cost basis represents the actual amount paid less any permanent impairment recorded on that asset.