Significant Accounting Policies (Details 3) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Investment in Marketable Securities
Marketable securities	$ 32,130,000	$ 32,049,000
Commercial mortgage-backed securities
Investment in Marketable Securities
Cost basis	23,000,000	23,000,000
Rake bonds
Investment in Marketable Securities
Cost basis	3,500,000	3,600,000
Level 1
Investment in Marketable Securities
Marketable securities	3,865,000	4,307,000
Level 2
Investment in Marketable Securities
Marketable securities	25,028,000	24,419,000
Level 3
Investment in Marketable Securities
Marketable securities	3,237,000	3,323,000
Fair Value
Investment in Marketable Securities
Marketable securities	$ 32,130,000	$ 32,049,000