Note 5 - Property, Plant and Equipment (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Note 5 - Property, Plant and Equipment (Details) [Line Items]
Depreciation, Depletion and Amortization, Nonproduction	$ 3,839,000us-gaap_DepreciationAndAmortization	$ 2,582,000us-gaap_DepreciationAndAmortization
Property, Plant and Equipment [Member]
Note 5 - Property, Plant and Equipment (Details) [Line Items]
Depreciation, Depletion and Amortization, Nonproduction	$ 1,774,000	$ 1,476,000

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-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 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

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

Name:	us-gaap_DepreciationAndAmortization
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration