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Note 5 - Acquisition-related Items (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	12 Months Ended
	Mar. 28, 2012	Dec. 31, 2012
Business Combination Disclosure Acquisition Related Items [Abstract]
Equity Method Investment, Ownership Percentage	29.50%
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Reclassification Adjustment from AOCI, Realized upon Sale or Liquidation, Net of Tax	$ 2,553	$ 2,553

Amount after tax of reclassification adjustment from accumulated other comprehensive income for translation gain (loss) realized upon the sale or liquidation of an investment in a foreign entity and foreign currency hedges that are designated and qualified as hedging instruments for hedges of the foreign currency exposure of a net investment in a foreign operation.

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