INTANGIBLE ASSETS (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amortized intangible assets:
Gross Carrying Value	$ 15,378	$ 14,842
Accumulated Amortization	7,397	6,013
Net Carrying Value	7,981us-gaap_FiniteLivedIntangibleAssetsNet	8,829us-gaap_FiniteLivedIntangibleAssetsNet
Unamortized intangible assets:
Perpetual water rights and other	3,390	3,390
Amortization of intangible assets	1,384us-gaap_AmortizationOfIntangibleAssets	1,354us-gaap_AmortizationOfIntangibleAssets	1,298us-gaap_AmortizationOfIntangibleAssets
Estimated future amortization expense related to intangible assets for the succeeding five years
2015	1,478
2016	1,277
2017	1,150
2018	1,026
2019	725
Thereafter	2,325
Water pumping rights
Amortized intangible assets:
Gross Carrying Value	1,084	1,084
Accumulated Amortization	85	85
Net Carrying Value	999	999
Water planning studies
Amortized intangible assets:
Weighted Average Amortization Period	11 years
Gross Carrying Value	12,984	12,567
Accumulated Amortization	6,729	5,517
Net Carrying Value	6,255	7,040
Leasehold improvements and other
Amortized intangible assets:
Weighted Average Amortization Period	20 years
Gross Carrying Value	1,310	1,191
Accumulated Amortization	583	411
Net Carrying Value	$ 727	$ 780

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 45

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(2)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 30

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

-URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275

+ Details

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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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- Definition

Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References