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Note 13 - Supplemental Balance Sheet Information (in thousands) (Detail) - Annual amortization expense (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Dec. 31, 2012
Mar. 31, 2012
2013     $ 461
2014     526
2015     463
2016     378
2017     378
Thereafter     492
Total $ 2,698 $ 1,468 $ 2,698