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Note 2 - Allowance for Doubtful Accounts | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Allowance for Credit Losses [Text Block] | Note 2 – Allowance for Doubtful Accounts The allowance for doubtful accounts was $ 0.7 million and $1.0 million at December 31, 2017 and 2016, respectively.

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- Definition The entire disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI http://asc.fasb.org/topic&trid=2196771 + Details
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