Consolidated Balance Sheets (Parentheticals) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Consolidated Balance Sheets
Series C redeemable convertible Preferred Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Series C redeemable convertible Preferred Stock, shares authorized	10,431	10,431
Series C redeemable convertible Preferred Stock, shares issued	5,231	5,231
Series C redeemable convertible Preferred Stock, shares outstanding	5,231	5,231
Series C redeemable convertible Preferred Stock, aggregate involuntary liquidation preference (in dollars)	$ 16,664
Common Stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, shares authorized	450,000,000	450,000,000
Common Stock, shares issued	180,567,444	173,644,532
Common stock in treasury, shares	479,953	378,116

Face amount or stated value per share of common stock.

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