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Real Estate and Tangible Water Assets, Net (Details) Components of Real Estate (USD $)
Dec. 31, 2014
Dec. 31, 2013
Real Estate [Abstract]    
Real estate and improvements held and used, net of accumulated amortization of $10.9 million in 2014 and $10 million in 2013 $ 16,463,000us-gaap_RealEstateInvestmentPropertyAtCost $ 14,790,000us-gaap_RealEstateInvestmentPropertyAtCost
Residential real estate and home construction inventories 322,938,000pico_InventoryRealEstateResidential 177,314,000pico_InventoryRealEstateResidential
Other real estate inventories completed or under development 10,308,000us-gaap_InventoryRealEstateOther 16,402,000us-gaap_InventoryRealEstateOther
Tangible water assets 42,530,000pico_WaterAndWaterRights 45,702,000pico_WaterAndWaterRights
Total real estate and tangible water assets 392,239,000pico_RealEstateAndWaterAssetsNet 254,208,000pico_RealEstateAndWaterAssetsNet
Accumulated amortization $ 10,900,000pico_ImprovementsToRealEstateAccumulatedAmortization $ 10,000,000pico_ImprovementsToRealEstateAccumulatedAmortization