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Note 1 - Description of Business and Summary of Significant Accounting Policies (Details Textual) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Jun. 30, 2015
Common Stock [Member] | Tarzian Inc [Member] |  |  |  |
Cost Method Ownership Percentage |  |  |  | 32.40%
Dividends Liquidation Dissolution [Member] | Tarzian Inc [Member] |  |  |  |
Cost Method Ownership Percentage |  |  |  | 67.90%
Customer Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Automotive [Member] |  |  |  |
Concentration Risk, Percentage | 24.00% |  |  |
Customer Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Medical [Member] |  |  |  |
Concentration Risk, Percentage | 11.00% |  |  |
Customer Concentration Risk [Member] | Sales Revenue, Services, Net [Member] | Restaurant [Member] |  |  |  |
Concentration Risk, Percentage | 9.00% |  |  |
Advertising Expense | $ 1,000,000 | $ 1,100,000 | $ 900,000 |
Minimum Percentage of Receivable Balances for creating Allowance for Doubtful Accounts | 85.00% |  |  |
Period for Creating Allowance for Doubtful Accounts | 120 days |  |  |
Provision for Doubtful Accounts | $ 600,000 | 1,300,000 | 400,000 |
Property, Plant and Equipment, Additions | 29,800,000 |  |  |
Asset Retirement Obligation | 701,000 | 600,000 |  |
Asset Retirement Obligation, Accretion Expense | $ 34,000 | $ 6,000 | $ 17,000 |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 + Details
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