Condensed Consolidated Balance Sheets (Unaudited) (Parentheticals) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Accounts receivable, allowance	$ 241	$ 194
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	43,000,000	43,000,000
Common stock, shares issued (in shares)	18,860,774	18,766,246
Common stock, shares outstanding (in shares)	18,860,774	18,766,246