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Note 11 - Income Taxes (Tables) | 12 Months Ended
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May 25, 2014
Income Tax Disclosure [Abstract] |
Schedule of Components of Income Tax Expense (Benefit) [Table Text Block] |
Current: |  | Year ended May 25, 2014 |  |  | Year ended May 26, 2013 |  |  | Year ended May 27, 2012 |
Federal |  | $ | 4,785 |  |  | $ | 2,808 |  |  | $ | 4,597 |
State |  |  | 157 |  |  |  | (18 | ) |  |  | (586 | )
Foreign |  |  | 56 |  |  |  | 56 |  |  |  | 56 |
Total |  |  | 4,998 |  |  |  | 2,846 |  |  |  | 4,067 |
Deferred: |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  | 5,059 |  |  |  | 6,218 |  |  |  | 2,641 |
State |  |  | 526 |  |  |  | 388 |  |  |  | 477 |
Total |  |  | 5,585 |  |  |  | 6,606 |  |  |  | 3,118 |
Income tax expense |  | $ | 10,583 |  |  | $ | 9,452 |  |  | $ | 7,185 |
Schedule of Effective Income Tax Rate Reconciliation [Table Text Block] |
|  | Year Ended May 25, 2014 |  |  | Year Ended May 26, 2013 |  |  | Year Ended May 27, 2012 |
Provision at U.S. statutory rate (1) |  | $ | 10,405 |  |  | $ | 11,214 |  |  | $ | 6,958 |
State income taxes, net of federal benefit |  |  | 711 |  |  |  | 731 |  |  |  | 451 |
Change in valuation allowance |  |  | 99 |  |  |  | 370 |  |  |  | 1 |
Tax-exempt interest |  |  | — |  |  |  | — |  |  |  | (40 | )
Tax credit carryforwards |  |  | (378 | ) |  |  | (801 | ) |  |  | (368 | )
Transaction costs |  |  | — |  |  |  | — |  |  |  | 322 |
Domestic manufacturing deduction |  |  | (406 | ) |  |  | (172 | ) |  |  | (208 | )
Change in value of contingent consideration |  |  | — |  |  |  | (1,450 | ) |  |  | — |
Other |  |  | 152 |  |  |  | (440 | ) |  |  | 69 |
Total |  | $ | 10,583 |  |  | $ | 9,452 |  |  | $ | 7,185 |
Schedule of Deferred Tax Assets and Liabilities [Table Text Block] |
|  | May 25, 2014 |  |  | May 26, 2013 |
Deferred tax assets: |  |  |  |  |  |  |  |
Net operating loss carryforwards |  | $ | 3,630 |  |  | $ | 3,853 |
Accruals and reserves |  |  | 1,746 |  |  |  | 1,388 |
Stock-based compensation |  |  | 723 |  |  |  | 621 |
Research and AMT credit carryforwards |  |  | 495 |  |  |  | 486 |
Other |  |  | 545 |  |  |  | 450 |
Gross deferred tax assets |  |  | 7,139 |  |  |  | 6,798 |
Valuation allowance |  |  | (881 | ) |  |  | (783 | )
Net deferred tax assets |  |  | 6,258 |  |  |  | 6,015 |
Deferred tax liabilities: |  |  |  |  |  |  |  |
Basis difference in investment in non-public company |  |  | (9,270 | ) |  |  | (5,505 | )
Depreciation and amortization |  |  | (5,705 | ) |  |  | (5,822 | )
Goodwill and other indefinite life intangibles |  |  | (19,360 | ) |  |  | (17,160 | )
Deferred tax liabilities |  |  | (34,335 | ) |  |  | (28,487 | )
Net deferred tax liabilities |  | $ | (28,077 | ) |  | $ | (22,472 | )
Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] |
|  | As of |
|  | May 25, 2014 |  |  | May 26, 2013 |  |  | May 27, 2012 |
Unrecognized tax benefits – beginning of the period |  | $ | 998 |  |  | $ | 766 |  |  | $ | 760 |
Gross increases – tax positions in prior period |  |  | 7 |  |  |  | 103 |  |  |  | 1 |
Gross decreases – tax positions in prior period |  |  | (48 | ) |  |  | — |  |  |  | (1 | )
Gross increases – current-period tax positions |  |  | 78 |  |  |  | 129 |  |  |  | 246 |
Lapse of statute of limitations |  |  | — |  |  |  | — |  |  |  | (240 | )
Unrecognized tax benefits – end of the period |  | $ | 1,035 |  |  | $ | 998 |  |  | $ | 766 |

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- Definition Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319 + Details
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- Definition Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- Definition Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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