Note 14 - Business Segment Information (Details) - Summary of Identifiable Assets By Geographical Area (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Identifiable assets
Identifiable Assets	$ 88,703	$ 95,444
UNITED STATES
Identifiable assets
Identifiable Assets	61,283	51,882
CANADA
Identifiable assets
Identifiable Assets	16,084	28,463
CHINA
Identifiable assets
Identifiable Assets	7,331	5,526
Asia Excluding China [Member]
Identifiable assets
Identifiable Assets	$ 4,005	$ 9,573