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Note B - Allowance for Doubtful Accounts | 12 Months Ended
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Dec. 31, 2016
Notes to Financial Statements |
Allowance for Credit Losses [Text Block] | Note B – Allowance for Doubtful Accounts The allowance for doubtful accounts was $1.0 million and $917,000 at December 31, 2016 and 2015, respectively.

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