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Note 13 - Preferred Stock and Warrants	12 Months Ended
	Dec. 31, 2016
Notes to Financial Statements
Preferred Stock [Text Block]	Note 13 – Preferred Stock and Warrants On November 2, 2015, the Company redeemed all of the 56,600 shares of the Series B Preferred Stock, and all of the 15,300 shares of the Company’s Series C Preferred Stock. The aggregate redemption price of the Series B Preferred Stock and Series C Preferred Stock was approximately $71.96 million, including dividends accrued but unpaid through, but not including the redemption date. On December 27, 2016, 378,495 net shares of common stock were issued upon the exercise in full of the warrant for 423,977 shares originally issued in connection with the issuance of the Series B Preferred Stock.

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The entire disclosure for terms, amounts, nature of changes, rights and privileges, dividends, and other matters related to preferred stock.

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