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Note 11 - Share Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  | All Stock Options Outstanding |
|  | Shares |  |  | Weighted Average Exercise Price |
Options outstanding as of January 3, 2015 |  |  | 53,000 |  |  | $ | 7.65 |
Options granted |  |  | - |  |  |  |  |
Options exercised, net |  |  | (3,500 | ) |  | $ | 4.30 |
Options forfeited/cancelled |  |  | (5,000 | ) |  | $ | 5.78 |
Options outstanding as of January 2, 2016 |  |  | 44,500 |  |  | $ | 8.12 |
Options exercisable as of January 2, 2016 |  |  | 29,500 |  |  | $ | 9.15 |
Intrinsic value of outstanding stock options as of January 2, 2016 |  | $ | 0 |  |  |  |  |
Intrinsic value of stock options exercised in fiscal year ended January 2, 2016 |  | $ | 8 |  |  |  |  |
Weighted average grant date fair value of stock options issued during fiscal year ended January 2, 2016 |  |  | N/A |  |  |  |  |
Options outstanding as of January 2, 2016 |  |  | 44,500 |  |  | $ | 8.12 |
Options granted |  |  | - |  |  |  |  |
Options exercised, net |  |  | (2,500 | ) |  | $ | 5.62 |
Options forfeited/cancelled |  |  | - |  |  |  |  |
Options outstanding as of December 31, 2016 |  |  | 42,000 |  |  | $ | 8.27 |
Options exercisable as of December 31, 2016 |  |  | 27,000 |  |  | $ | 9.47 |
Intrinsic value of outstanding stock options as of December 31, 2016 |  | $ | 6 |  |  |  |  |
Intrinsic value of stock options exercised in fiscal year ended December 31, 2016 |  | $ | 3 |  |  |  |  |
Weighted average grant date fair value of stock options issued during fiscal year ended December 31, 2016 |  |  | N/A |  |  |  |  |
Schedule of Nonvested Share Activity [Table Text Block] |
Nonvested Stock Options |  | Shares |  |  | Weighted-Average Grant-Date Fair Value |
Nonvested at January 2, 2016 |  |  | 15,000 |  |  | $ | 2.33 |
Vested |  |  | - |  |  |  |  |
Forfeited |  |  | - |  |  |  |  |
Issued nonvested |  |  | - |  |  |  |  |
Nonvested at December 31, 2016 |  |  | 15,000 |  |  | $ | 2.33 |
Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block] |
Range of Exercise Prices |  |  | Number of Outstanding Options |  |  | Weighted-Average Remaining Contractual Life |  |  | Weighted-Average Exercise Price |
|  |  |  |  |  | Outstanding |  |  | Vested |  |  | Outstanding |  |  | Vested |  |  | Outstanding |  |  | Vested |
| $5.27 | - | $6.10 |  |  |  | 17,000 |  |  |  | 2,000 |  |  |  | 6.62 |  |  |  | 1.02 |  |  | $ | 6.00 |  |  | $ | 5.27 |
|  | $9.81 |  |  |  |  | 25,000 |  |  |  | 25,000 |  |  |  | 0.55 |  |  |  | 0.55 |  |  | $ | 9.81 |  |  | $ | 9.81 |
|  |  |  |  |  |  | 42,000 |  |  |  | 27,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Unrecognized Compensation Cost, Nonvested Awards [Table Text Block] |
Fiscal Year |  | Time- Based |  |  | Performance- Based |  |  | Total |
2017 |  | $ | 578 |  |  | $ | - |  |  | $ | 578 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Fiscal Years Ended |
|  | December 31, 2016 |  |  | January 2, 2016 |
Weighted average risk-free interest rate |  |  | 1.35 | % |  |  | 1.74 | %
Expected term of option (years) |  |  | 5 |  |  |  | 5 |
Expected stock price volatility |  |  | 33 | % |  |  | 35 | %
Expected dividend yield |  |  | 0.00 | % |  |  | 0.00 | %
Annual forfeiture rate |  |  | 3.11 | % |  |  | 3.23 | %
Weighted-average grant date fair value |  | $ | 5.51 |  |  | $ | 5.00 |
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block] |
|  | Number of Restricted Stock Units (in thousands) |  |  | Weighted Average Grant Date Fair Value per Share |
Outstanding non-vested at January 3, 2015 |  |  | 500 |  |  | $ | 6.61 |
Granted |  |  | 48 |  |  | $ | 5.00 |
Vested |  |  | (334 | ) |  | $ | 6.05 |
Forfeited or expired |  |  | (5 | ) |  | $ | 7.95 |
Outstanding non-vested at January 2, 2016 |  |  | 209 |  |  | $ | 7.10 |
Granted – time-based vesting |  |  | 63 |  |  | $ | 5.98 |
Granted – performance-based vesting |  |  | 200 |  |  | $ | 5.36 |
Vested |  |  | (74 | ) |  | $ | 5.56 |
Forfeited or expired |  |  | - |  |  |  | - |
Outstanding non-vested at December 31, 2016 |  |  | 398 |  |  | $ | 6.34 |

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- Definition Tabular disclosure of option exercise prices, by grouped ranges, including the upper and lower limits of the price range, the number of shares under option, weighted average exercise price and remaining contractual option terms. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for share options (or share units) that were outstanding at the beginning and end of the year, vested and expected to vest, exercisable or convertible at the end of the year, and the number of share options or share units that were granted, exercised or converted, forfeited, and expired during the year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the total compensation cost related to nonvested awards not yet recognized and the weighted-average period over which it is expected to be recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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