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Investments - Summary of Real Estate Investment (Detail) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Real Estate [Abstract]    
Land $ 11,476 $ 11,299
Land improvements 1,399 1,351
Buildings 3,097 3,022
Other 1,317 1,262
Total, at cost 17,289 16,934
Less: accumulated depreciation and amortization (1,003) (706)
Real estate, net 16,286 16,228
ADC Arrangement classified as real estate investment 2,652  
Real estate investments $ 18,938 $ 16,228