Investments In Direct Financing Leases (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Initial direct costs	$ 1,700,000	$ 1,700,000
Investment in a direct financing lease, net	242,212,000	234,089,000
Proceeds from Sale of Lease Receivables	0	4,494,000	0
Provision for Lease Losses	0	0
Payments to Acquire Productive Assets	$ (3,262,000)	$ 0	$ (2,113,000)
Maximum [Member]
Length of lease (in years)	21
Minimum [Member]
Length of lease (in years)		18
Imagine Schools [Member]
Number of public charter school properties	27	26