INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS

INTANGIBLE ASSETS

As of December 31, 2015 and 2014, intangible assets that will continue to be amortized and those not amortized were:

	Weighted Average Amortization Period (years)	2015						2014
		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	$	98	$	986	$	1,084	$	85	$	999
Water planning studies	11	14,824		7,859		6,965		12,984		6,729		6,255
Leasehold improvements and other	18	1,532		745		787		1,310		583		727
Total		$	17,440	$	8,702	$	8,738	$	15,378	$	7,397	$	7,981
Unamortized intangible assets:
Perpetual water rights and other		$	3,778	$	—	$	3,778	$	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, 2015, 2014, and 2013, amortization of intangible assets was $1.4 million. Estimated future amortization expense related to intangible assets for the succeeding 5 years is approximately $1.6 million in 2016, $1.5 million in 2017, $1.4 million in 2018, $1.1 million in 2019, $0.6 million in 2020, and $2.5 million thereafter.