INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2014

INTANGIBLE ASSETS

INTANGIBLE ASSETS

4 INTANGIBLE ASSETS

        As of December 31, 2014 and 2013, intangible assets that will continue to be amortized and those not amortized were:

	Weighted Average Amortization Period (years)	2014						2013
		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	$	85	$	999	$	1,084	$	85	$	999
Water planning studies	11		12,984		6,729		6,255		12,567		5,517		7,040
Leasehold improvements and other	20		1,310		583		727		1,191		411		780
Total		$	15,378	$	7,397	$	7,981	$	14,842	$	6,013	$	8,829
Unamortized intangible assets:
Perpetual water rights and other		$	3,390	$	—	$	3,390	$	3,390	$	—	$	3,390

        Water pumping rights usage is the amount of water pumped from aquifers to be treated and distributed to customers.

        For the years ended December 31, 2014, 2013, and 2012, amortization of intangible assets was $1,384, $1,354, and $1,298, respectively. Estimated future amortization expense related to intangible assets for the succeeding five years is approximately $1,478, $1,277, $1,150, $1,026, 725, and $2,325 thereafter.