Note 7 - Segment and Geographic Information (Details) - Long Lived Assets by Geographic Region - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Note 7 - Segment and Geographic Information (Details) - Long Lived Assets by Geographic Region [Line Items]
Long lived assets by region	$ 85,878	$ 84,782
CHINA
Note 7 - Segment and Geographic Information (Details) - Long Lived Assets by Geographic Region [Line Items]
Long lived assets by region	36,828	37,147
UNITED STATES
Note 7 - Segment and Geographic Information (Details) - Long Lived Assets by Geographic Region [Line Items]
Long lived assets by region	36,047	33,913
BERMUDA
Note 7 - Segment and Geographic Information (Details) - Long Lived Assets by Geographic Region [Line Items]
Long lived assets by region	12,650	13,383
Other Region [Member]
Note 7 - Segment and Geographic Information (Details) - Long Lived Assets by Geographic Region [Line Items]
Long lived assets by region	$ 353	$ 339