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Investments - Summary of Other Invested Assets (Detail) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Real Estate [Abstract]    
Land $ 11,476 $ 11,299
Land improvements 1,399 1,351
Buildings 3,097 3,022
Other 1,281 1,262
Total, at cost 17,253 16,934
Less: accumulated depreciation and amortization (803) (706)
Other investments $ 16,450 $ 16,228