Note 10 - Segment Information (Details) - Long Lived Assets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Long lived assets:
Long lived assets	$ 12,803	$ 12,611
UNITED STATES
Long lived assets:
Long lived assets	9,822	9,368
International [Member]
Long lived assets:
Long lived assets	$ 2,981	$ 3,243