Note 2 - Finance Receivables (Tables)

12 Months Ended

Dec. 31, 2013

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	2013		2012
Portfolio
Term Loans
	$	21,420	$	6,500
Royalty Purchases
		7,866
Total		29,286	$	6,500
Less: current portion		660		(230	)
Total noncurrent portion of finance receivables	$	28,626	$	6,270

Fair Value Measurements, Significant Assumptions

	December 31, 2013
Dividend rate		0	%
Risk-free rate		2.5	%
Expected life (years)		6.6
Expected volatility		97	%