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Note 7 - Earnings (loss) per common share (Details) (USD $)
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3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended |
|---|---|---|---|---|---|---|
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Jul. 01, 2012
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Jul. 01, 2012
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Jun. 30, 2013
Had There Been Net Earnings [Member]
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Jun. 30, 2013
Had There Been Net Earnings [Member]
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Jul. 01, 2012
Equity Option [Member]
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Jul. 01, 2012
Equity Option [Member]
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| Note 7 - Earnings (loss) per common share (Details) [Line Items] | ||||||
| Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount | 41,360 | 52,873 | 43,600 | 317,100 | ||
| Treasury Stock Method, Dilutive Options Average Share Price Used (in Dollars per share) | $ 3.48 | $ 3.32 |
| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Average share price used by the treasury stock method to determine impact of dilutive options. No definition available.
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| X | ||||||||||
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- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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