Note 18 - Related Party Transactions (Detail) (USD $)	12 Months Ended				12 Months Ended		12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Mar. 27, 2012	Dec. 31, 2012 Related Party [Member]	Mar. 31, 2012 Sold [Member]	Dec. 31, 2012 Remaining 20% Interest [Member]	Mar. 31, 2012 Remaining 20% Interest [Member]
Related Party Transaction, Sale Ownership Percentage				80.00%
Related Party Transaction, Sale Proceeds	$ 9,600,000
Proceeds from Divestiture of Businesses, Net of Cash Divested	6,618,000	23,838,000	941,000		2,900,000
Noncash or Part Noncash Divestiture, Amount of Consideration Received	6,712,000	1,784,000	2,134,000		6,700,000
Gain (Loss) on Sale of Business	700,000
Agreement, Purchase Price Intangible Assets	1,200,000
Equity Method Investment, Ownership Percentage						20.00%
Equity Method Investments							1,100,000	800,000
Income (Loss) from Equity Method Investments							$ 200,000