Note 14 - Business Segment Information (Details) - Summary of Identifiable Assets By Geographical Area (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Identifiable assets
Identifiable assets	$ 89,091	$ 95,444
UNITED STATES
Identifiable assets
Identifiable assets	58,872	51,882
CANADA
Identifiable assets
Identifiable assets	17,550	28,463
CHINA
Identifiable assets
Identifiable assets	9,137	9,573
Asia Excluding China [Member]
Identifiable assets
Identifiable assets	$ 3,532	$ 5,526