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Note 9 - Financing Arrangements (Details) - Interest Expense Recognized on the Notes (Senior Convertible Notes [Member], USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 9 Months Ended | |
|---|---|---|---|
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Sep. 28, 2014
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Sep. 28, 2014
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Sep. 29, 2013
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Senior Convertible Notes [Member]
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| Note 9 - Financing Arrangements (Details) - Interest Expense Recognized on the Notes [Line Items] | |||
| Contractual interest expense at 2% per annum | $ 746 | $ 2,230 | $ 290 |
| Amortization of debt issuance costs | 130 | 391 | 50 |
| Accretion of debt discount | 1,185 | 3,502 | 432 |
| Total | $ 2,061 | $ 6,123 | $ 772 |