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Note 10 - Per Share Data (Tables) | 9 Months Ended
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Sep. 28, 2019
Notes Tables |
Schedule of Weighted Average Number of Shares [Table Text Block] |
|  | Thirteen Week Periods Ended |  |  | Thirty-Nine Week Periods Ended |
|  | September 28, 2019 |  |  | September 29, 2018 |  |  | September 28, 2019 |  |  | September 29, 2018 |
Basic weighted average shares outstanding |  |  | 12,955,198 |  |  |  | 12,284,727 |  |  |  | 12,897,303 |  |  |  | 12,254,415 |
Dilutive effect of outstanding restricted share units |  |  | 63,416 |  |  |  | 32,723 |  |  |  | 53,628 |  |  |  | 24,165 |
Weighted average dilutive shares outstanding |  |  | 13,018,614 |  |  |  | 12,317,450 |  |  |  | 12,950,931 |  |  |  | 12,278,580 |
Unissued Shares of Common Stock [Table Text Block] |
|  | September 28, 2019 |  |  | December 29, 2018 |
Time-based restricted stock units outstanding |  |  | 120,372 |  |  |  | 147,372 |
Performance-based restricted stock units outstanding |  |  | 320,000 |  |  |  | 200,000 |
Future grants of options or shares |  |  | 267,551 |  |  |  | 442,699 |
Shares reserved for employee stock purchase plan |  |  | 267,877 |  |  |  | 386,403 |
Total |  |  | 975,800 |  |  |  | 1,176,474 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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