Long-Term Water Assets - Volume of Water Assets (Details)		Jun. 30, 2016 acre ft	Dec. 31, 2015 acre ft	Dec. 31, 2009 acre ft	Dec. 31, 2008 acre ft
Banked water and water for future delivery
Total purchased water - third parties		51,880	49,018
Total purchased and contracted water sources in acre feet		106,566	104,810
AVEK
Banked water and water for future delivery
AVEK water bank		13,033	13,033	6,393	8,393
Company water bank		17,287	8,700
AVEK water for future delivery		2,362	2,362
Banked water and water for future delivery		32,682	24,095
Transferable water	[1]	9,061	14,786
Water returned (in acre feet)		13,592
Transferable water with AVEK multiple		1.5
Affiliated Entity
Banked water and water for future delivery
Water contracts and purchased water		10,137	10,137
Wheeler Ridge Maricopa Water Storage District
Banked water and water for future delivery
Water contracts and purchased water		15,547	15,547
Tejon-Castac Water District
Banked water and water for future delivery
Banked water and water for future delivery		33,390	34,496
Water contracts and purchased water		5,749	5,749

[1] Any transferable water with AVEK that is used by the Company or returned by AVEK to the Company will be returned at a 1.5 to 1 factor giving the Company use of a total of 13,592 (9,061 x 1.5) acre feet.