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Note 11 - Stock Incentive Plans (Tables) | 12 Months Ended
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Jan. 02, 2016
Notes Tables |
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  |  |  |  |  |  |  |  | Weighted |  |  | Aggregate |
|  |  |  |  |  | Weighted |  |  | Average |  |  | Intrinsic |
|  | Number of |  |  | Average |  |  | Remaining |  |  | Value |
|  | Shares |  |  | Exercise Price |  |  | Contractual Term |  |  | (in thousands) |
Outstanding, December 29, 2012 |  |  | 1,155,239 |  |  | $ | 8.53 |  |  |  |  |  |  |  |  |
Granted |  |  | 195,512 |  |  |  | 6.56 |  |  |  |  |  |  |  |  |
Exercised |  |  | 204,658 |  |  |  | 5.60 |  |  |  |  |  |  |  |  |
Forfeited |  |  | 39,931 |  |  |  | 8.20 |  |  |  |  |  |  |  |  |
Canceled or expired |  |  | 41,150 |  |  |  | 9.10 |  |  |  |  |  |  |  |  |
Outstanding, December 28, 2013 |  |  | 1,065,012 |  |  |  | 8.72 |  |  |  |  |  |  |  |  |
Granted |  |  | 104,064 |  |  |  | 9.59 |  |  |  |  |  |  |  |  |
Exercised |  |  | 351,856 |  |  |  | 6.64 |  |  |  |  |  |  |  |  |
Forfeited |  |  | 96,019 |  |  |  | 21.54 |  |  |  |  |  |  |  |  |
Canceled or expired |  |  | 6,750 |  |  |  | 8.78 |  |  |  |  |  |  |  |  |
Outstanding, January 3, 2015 |  |  | 714,451 |  |  |  | 8.14 |  |  |  |  |  |  |  |  |
Granted |  |  | 71,517 |  |  |  | 20.58 |  |  |  |  |  |  |  |  |
Exercised |  |  | 150,409 |  |  |  | 6.07 |  |  |  |  |  |  |  |  |
Forfeited |  |  | 19,003 |  |  |  | 12.15 |  |  |  |  |  |  |  |  |
Canceled or expired |  |  | 41,705 |  |  |  | 32.95 |  |  |  |  |  |  |  |  |
Outstanding, January 2, 2016 |  |  | 574,851 |  |  | $ | 8.30 |  |  |  | 6.4 |  |  | $ | 2,826 |
Options Exercisable As Of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
January 2, 2016 |  |  | 365,596 |  |  | $ | 6.36 |  |  |  | 5.3 |  |  | $ | 2,151 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2015 |  |  | 2014 |  |  | 2013 |
Dividend yield |  |  | 0 | % |  |  |  | 0 | % |  |  |  | 0% |
Historical volatility |  | 51% | - | 58% |  |  |  | 65 | % |  |  |  | 65% |
Risk-free rate |  | 1.5 | - | 1.8 % |  |  | 1.7 | - | 2.1% |  |  |  | 1.3% |
Expected life (years) |  |  | 6 | % |  |  | 6 | - | 6.25 |  |  |  | 6.25 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Outstanding, December 29, 2012 |  |  | 860,325 |  |  | $ | 5.78 |
Granted |  |  | 321,664 |  |  |  | 6.00 |
Vested |  |  | 399,405 |  |  |  | 5.39 |
Forfeited |  |  | 62,386 |  |  |  | 5.78 |
Outstanding, December 28, 2013 |  |  | 720,198 |  |  |  | 5.91 |
Granted |  |  | 202,274 |  |  |  | 10.31 |
Vested |  |  | 345,577 |  |  |  | 6.25 |
Forfeited |  |  | 157,221 |  |  |  | 6.21 |
Outstanding, January 3, 2015 |  |  | 419,674 |  |  |  | 7.64 |
Granted |  |  | 107,004 |  |  |  | 19.59 |
Vested |  |  | 205,137 |  |  |  | 7.84 |
Forfeited |  |  | 44,988 |  |  |  | 8.89 |
Outstanding, January 2, 2016 |  |  | 276,553 |  |  | $ | 11.93 |

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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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