Note 6 - Severance Activity (Details) - Employee Severance [Member] $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Continuing Operations [Member]
Balance as of December 31, 2015	$ 2,011
Accruals	459
Payments	(140)
Balance as of March 31, 2016	2,330
Discontinued Operations [Member]
Balance as of December 31, 2015	1,074
Accruals	659
Payments	(388)
Balance as of March 31, 2016	1,345
Balance as of December 31, 2015	3,085
Accruals	1,118
Payments	(528)
Balance as of March 31, 2016	$ 3,675