INTANGIBLE ASSETS

12 Months Ended

Dec. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS

INTANGIBLE ASSETS

As of December 31, 2016 and 2015, intangible assets that will continue to be amortized and those not amortized were:

	Weighted Average Amortization Period (years)	2016						2015
		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	$	105	$	979	$	1,084	$	98	$	986
Water planning studies	11	15,734		9,307		6,427		14,824		7,859		6,965
Leasehold improvements and other	18	1,331		696		635		1,532		745		787
Total		$	18,149	$	10,108	$	8,041	$	17,440	$	8,702	$	8,738
Unamortized intangible assets:
Perpetual water rights and other		$	3,776	$	—	$	3,776	$	3,778	$	—	$	3,778

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

For the year ended December 31, 2016, amortization of intangible assets was $1.6 million and for the years ended December 31, 2015 and 2014, amortization of intangible assets was $1.4 million. Estimated future amortization expense related to intangible assets for the succeeding 5 years is approximately $1.3 million in 2017, $1.3 million in 2018, $1.2 million in 2019, $1.0 million in 2020, $1.0 million in 2021, and $2.2 million thereafter.