Note 8 - Stock-Based Employee Compensation (Details Textual) - USD ($) $ in Millions	6 Months Ended
Jun. 28, 2015	Jun. 29, 2014
Long-term Equity Incentive Plan 2005 [Member] \| Pro Rata Through March 09 2018 [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Long-term Equity Incentive Plan 2005 [Member] \| Pro Rata Through March 09 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	104,567
Long-term Equity Incentive Plan 2005 [Member] \| Vest on March 9, 2017 [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	2 years
Long-term Equity Incentive Plan 2005 [Member] \| Vest on March 9, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	54,095
Long-term Equity Incentive Plan 2005 [Member] \| Pro Rata Through June 15, 2018 [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	3 years
Long-term Equity Incentive Plan 2005 [Member] \| Pro Rata Through June 15, 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	100,000
Long-term Equity Incentive Plan 2005 [Member] \| June 15, 2018 through June 15, 2021 [Member] \| Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	25.00%
Long-term Equity Incentive Plan 2005 [Member] \| June 15, 2018 through June 15, 2021 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Exercisable, Number	325,000
Long-term Equity Incentive Plan 2005 [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	382,492
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	908,272
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	2,278,845
Stock Issued During Period, Shares, Restricted Stock Award, Gross	583,662
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	908,272
Allocated Share-based Compensation Expense	$ 1.6	$ 1.3

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

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-Publisher SEC

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Number of options outstanding, including both vested and non-vested options.

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The number of exercisable share options (fully vested and expected to vest) that may be converted as of the balance sheet date.

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Percentage of vesting of share-based compensation awards.

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Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

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