Consolidated Balance Sheets (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 61	$ 0
Fair value of equity-method investment	$ 38,834
Assets		$ 24,355
Par Value (in dollars per share)	$ 0.001	$ 0.001
Shares Authorized (in shares)	40,000,000	40,000,000
Shares Issued (in shares)	14,399,000	14,220,000
Shares Outstanding (in shares)	11,571,000	11,406,000
Treasury stock (in shares)	2,828,000	2,814,000