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Note 3 - Property and Equipment (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Property, Plant and Equipment [Table Text Block]

		March 31, 2016				December 31, 2015
Construction equipment		$	119,651			$	114,724
Transportation equipment			18,652				18,056
Buildings			12,728				10,860
Office equipment			2,813				2,810
Leasehold improvement			894				894
Construction in progress			89				1,986
Land			3,509				4,257
Water rights			200				200
			158,536				153,787
Less accumulated depreciation			(86,055	)			(80,312	)
Total property and equipment, net		$	72,481			$	73,475

X

- Definition

Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(13))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

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Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_TableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration