Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($) $ / shares in Thousands	Jun. 30, 2018	Dec. 31, 2017
Deferred tax assets, valuation allowance	$ 6,521,000	$ 6,458,000
Preferred stock, no par value (in dollars per share)	$ 0	$ 0
Preferred stock, shares authorized (in shares)	250,000,000	250,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	500,000,000	500,000,000
Common stock, shares issued (in shares)	45,572,568	45,572,568
Common stock, shares outstanding (in shares)	45,572,568	45,572,568

Face amount per share of no-par value common stock.

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