INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2011

INTANGIBLE ASSETS

INTANGIBLE ASSETS

4 INTANGIBLE ASSETS

        As of December 31, 2011 and 2010, intangible assets that will continue to be amortized and those not amortized were:

			2011						2010
	Weighted Average Amortization Period
			Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Amortized intangible assets:
Hawthorne lease		—	$	—	$	—	$	—	$	6,515	$	6,463	$	52
Water pumping rights		usage		1,084		14		1,070		1,084		14		1,070
Water planning studies		12		11,087		3,413		7,674		11,066		2,812		8,254
Leasehold improvements and other		22		1,086		345		741		2,252		1,747		505
Total		14	$	13,257	$	3,772	$	9,485	$	20,917	$	11,036	$	9,881
Unamortized intangible assets:
Perpetual water rights and other			$	3,229		—	$	3,229	$	3,221		—	$	3,221

        For the years ended December 31, 2011, 2010, and 2009, amortization of intangible assets was $1,421, $1,894, and $1,310, respectively. Estimated future amortization expense related to intangible assets for the succeeding five years is approximately $1,126, $1,100, $1,009, $955, $915, and $4,380 thereafter.