Note 21 - Segment Information (Detail) - Percentage of net sales to major customer	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Customer A	9.60%	13.80%	18.90%

Percentage of revenue generated from a single external customer that accounts for 10 percent or more of an entity's revenues.

No definition available.

Name:	us-gaap_EntityWideRevenueMajorCustomerPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration