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Note 12 - Subsequent Events	6 Months Ended
Note 12 - Subsequent Events	Jun. 30, 2018
Notes to Financial Statements
Subsequent Events [Text Block]	NOTE 12 — SUBSEQUENT EVENTS Cash dividend On August 7, 2018 , the Board of Directors of the Company declared, approved and authorized payment of a quarterly dividend of $5.1 million ( $0.10 per share) to all holders of the Company’s issued and outstanding shares of common stock on August 21, 2018 , payable on August 29, 2018 .