Note 6 - Stock Repurchase Program - Schedule of Stock Purchases (Details) - USD ($) $ / shares in Units, $ in Thousands		1 Months Ended			5 Months Ended
		Apr. 30, 2017	Jan. 31, 2017	Dec. 31, 2016	Apr. 30, 2017
Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plans or Programs		$ 468	$ 490	$ 500	$ 468
Total Number of Shares Purchased (in shares)	[1]	80,426	49,920	0	130,346
Average Price Paid per Share (in dollars per share)		$ 0.27	$ 0.20	$ 0	$ 0.25
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs (in shares)		80,426	49,920	0	130,346

[1] 49,920 shares of common stock purchased were purchased through a private transaction