INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2012

INTANGIBLE ASSETS

INTANGIBLE ASSETS

4 INTANGIBLE ASSETS

        As of December 31, 2012 and 2011, intangible assets that will continue to be amortized and those not amortized were:

	Weighted Average Amortization Period (years)	2012						2011
		Gross Carrying Value		Accumulated Amortization		Net Carrying Value		Gross Carrying Value		Accumulated Amortization		Net Carrying Value
Amortized intangible assets:
Water pumping rights	usage	$	1,084	$	79	$	1,005	$	1,084	$	14	$	1,070
Water planning studies	12		11,894		4,322		7,572		11,087		3,413		7,674
Leasehold improvements and other	21		1,140		249		891		1,086		345		741
Total	13	$	14,118	$	4,650	$	9,468	$	13,257	$	3,772	$	9,485
Unamortized intangible assets:
Perpetual water rights and other		$	4,495	$	—	$	4,495	$	3,229	$	—	$	3,229

        For the years ended December 31, 2012, 2011, and 2010, amortization of intangible assets was $1,298, $1,421, and $1,894, respectively. Estimated future amortization expense related to intangible assets for the succeeding five years is approximately $1,319, $1,296, $1,237, $1,192, and $4,638 thereafter.