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Note B - Allowance for Doubtful Accounts	12 Months Ended
	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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The entire disclosure for allowance for credit losses.

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