Disposition of Theme Parks (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of the net results of discontinued operations
Decrease (increase) in contingent liabilities from sale indemnities	$ 549,000	$ 7,273,000	$ 1,201,000
Income (loss) from discontinued operations	549,000	7,273,000	1,201,000
Assets of Disposal Group, Including Discontinued Operation	0	0
Liabilities of Disposal Group, Including Discontinued Operation	$ 0	$ 0