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Note 8 - Fair Value Measurements (Detail) - Level 3 Investments (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 30, 2011
Ending Balance			$ 13,675	$ 13,675
Sales and Settlement at Par	0	(2,000)	(100)
Included in other income (expense)	0	40	0
Included in other comprehensive income	42	9	90
Ending Balance	$ 11,756	$ 11,714	$ 13,665	$ 13,675

The aggregate net change in the difference between the fair value and the carrying value, or in the comparative fair values, of marketable securities categorized as trading held at each balance sheet date, that was included in earnings for the period, which may have arisen from (a) securities classified as trading, (b) the unrealized holding gain (loss) on held-to-maturity securities transferred to the trading security category, and (c) the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) on available-for-sale securities transferred to trading securities during the period.

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