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Note 12 - Equity Investment (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Mar. 28, 2013
M W L [Member] | Percentage Owned by Non-related Party [Member] |  |  |  |
Equity Method Investment, Ownership Percentage | 55.00% |  |  |
M W L [Member] | Intersegment Eliminations [Member] |  |  |  |
Revenue, Net |  |  | $ 2,100,000 |
M W L [Member] | Trade Accounts Receivable [Member] |  |  |  |
Due from Affiliates | $ 204,000 |  |  |
M W L [Member] | Current Accounts Receivable [Member] |  |  |  |
Due to Affiliate | $ 4,300,000 |  |  |
M W L [Member] |  |  |  |
Equity Method Investment, Ownership Percentage | 45.00% |  |  |
Equity Method Investments |  |  |  | $ 2,600,000
Revenue from Related Parties | $ 5,000,000 | $ 8,500,000 | $ 8,200,000 |

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- Definition The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571 + Details
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- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35755396&loc=d3e33749-111570 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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