Long-Term Water Assets - Additional Information (Details)		3 Months Ended	6 Months Ended	12 Months Ended
	Aug. 06, 2015 $ / acre ft acre ft	Mar. 31, 2016 USD ($) $ / acre ft acre ft	Jun. 30, 2016 USD ($) $ / acre ft acre ft	Dec. 31, 2013 acre ft	Dec. 31, 2015 acre ft	Dec. 31, 2009 acre ft	Dec. 31, 2008 acre ft
Long Lived Assets Held For Sale [Line Items]
Long-term water assets (volume)			51,880		49,018
Water assets sales price | $ / acre ft		9,601,000
Water sold (volume)		7,285
Cost of purchased water | $		$ 5,925,000
Amortization expense | $			$ 0
AVEK
Long Lived Assets Held For Sale [Line Items]
AVEK water bank			13,033		13,033	6,393	8,393
AVEK water for future delivery			2,362		2,362
SWP water contracts
Long Lived Assets Held For Sale [Line Items]
AVEK water for future delivery			3,444
DMB
Long Lived Assets Held For Sale [Line Items]
Contract renewal optional term			35 years	35 years
Consumer price per acre | $ / acre ft			695
DMB | Maximum
Long Lived Assets Held For Sale [Line Items]
Annual fee increase, percent			3.00%
DMB | Transferable water
Long Lived Assets Held For Sale [Line Items]
Long-term water assets (volume)				6,693
PEF | Transferable water | Ranchcorp
Long Lived Assets Held For Sale [Line Items]
Annual fee increase, percent	3.00%
Annual option payment, percent	30.00%
Water assets sales price | $ / acre ft	1,025
PEF | Transferable water | Maximum | Ranchcorp
Long Lived Assets Held For Sale [Line Items]
Water assets, volume available for purchase in 2016 (up to)	2,000
Water assets, volume available for purchase from 2017-2030 (up to)	3,500