Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Restricted cash (in Dollars)	$ 0	$ 252
Trade accounts receivable, allowances (in Dollars)	$ 137	$ 265
Common stock, par value (in Dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares authorized (in Shares)	100,000,000	100,000,000
Common stock, shares issued (in Shares)	49,158,886	44,698,650
Common stock, shares outstanding (in Shares)	49,158,886	44,698,650