Investments - Narrative (Details) (USD $)	Jun. 30, 2014		Dec. 31, 2013
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 26,059,000		$ 10,231,000
Other Investments	400,000
Cost Basis	26,025,000	[1]	10,246,000	[1]
Short Term Bond Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	24,034,000		7,985,000
Cost Basis	24,000,000	[1]	8,000,000
Certificates of Deposit [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	1,663,000		1,634,000
Cost Basis	1,663,000	[1]	1,634,000	[1]
Other Investment [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	362,000		612,000
Cost Basis	362,000	[1]	612,000	[1]
Mutual Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair Value	$ 900,000		$ 1,007,000

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