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Stock Options, Stock Grants and New Stock (Tables) | 12 Months Ended
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Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Summary of activity in the Company’s stock option plans | A summary of activity in the Company's stock option plans is as follows:
| Weighted Average Exercise Price |  | Options Outstanding |  | Weighted Average Contractual Term (in years) |  | Intrinsic Value of Options |  | Options Available
At December 28, 2013 | $ | 11.95 |  |  | 162,736 |  |  | 7.5 |  | $ | 582,894 |  |  | 181,017 |
Granted February 20, 2014 | $ | 14.76 |  |  | 13,790 |  |  |  |  |  |  | (13,790 | )
Exercised | $ | 11.23 |  |  | (17,074 | ) |  |  |  | $ | 91,772 |  |  |  |
Expired | $ | 13.70 |  |  | (2,157 | ) |  |  |  |  |  |  | 2,157 |
At January 3, 2015 | $ | 12.25 |  |  | 157,295 |  |  | 6.9 |  | $ | 852,810 |  |  | 169,384 |
Granted February 10, 2015 | $ | 16.01 |  |  | 32,532 |  |  |  |  |  |  |  | (32,532 | )
Exercised | $ | 12.47 |  |  | (666 | ) |  |  |  | $ | 1,511 |  |  |  |
Expired | $ | 14.08 |  |  | (15,176 | ) |  |  |  |  |  |  | 15,176 |
At December 31, 2015 | $ | 12.79 |  |  | 173,985 |  |  | 6.4 |  | $ | — |  |  | 152,028 |
Exercised | $ | — |  |  | — |  |  |  |  | $ | — |  |  |
Expired | $ | 16.01 |  |  | (937 | ) |  |  |  |  |  | 937 |
At December 31, 2016 | $ | 12.77 |  |  | 173,048 |  |  | 5.4 |  | $ | — |  |  | 152,965 |
Exercisable options | $ | 12.12 |  |  | 129,762 |  |  | 4.8 |  | $ | — |  |  |  |
Options expected to vest: |  |  |  |  |  |  |  |  | Grant Date Fair Value |  |  |
At January 3, 2015 | $ | 12.54 |  |  | 100,508 |  |  | 7.2 |  | $ | 6.76 |  |  |  |
Granted February 10, 2015 | $ | 16.01 |  |  | 32,532 |  |  |  |  | $ | 6.39 |  |  |  |
Vested | $ | 12.16 |  |  | (35,794 | ) |  |  |  | $ | 7.01 |  |  |  |
Forfeited unvested options | $ | 14.23 |  |  | (11,286 | ) |  |  |  |  |  |
At December 31, 2015 | $ | 13.76 |  |  | 85,960 |  |  | 7.3 |  | $ | 6.57 |  |  |  |
Vested | $ | 12.71 |  |  | (41,737 | ) |  |  |  | $ | 6.91 |  |  |
Forfeited unvested options | $ | 16.01 |  |  | (937 | ) |  |  |  |  |  |
At December 31, 2016 | $ | 14.72 |  |  | 43,286 |  |  | 7.1 |  | $ | 6.24 |  |  |
Stock options by exercise price range | The following table summarizes information about stock options outstanding at December 31, 2016:
Range of Exercise Prices |  | Outstanding Stock Options |  | Exercisable Stock Options
| Shares |  | Weighted Average |  | Shares |  | Weighted Average Exercise Price
|  | Exercise Price |  | Remaining Contractual Life in Years |  |
$ | 11.55 |  |  | 82,342 |  |  | $ | 11.55 |  |  | 4.06 |  | 82,342 |  |  | $ | 11.55 |
$ | 11.35 |  |  | 25,076 |  |  | $ | 11.35 |  |  | 5.10 |  | 19,879 |  |  | $ | 11.35 |
$ | 13.70 |  |  | 27,801 |  |  | $ | 13.70 |  |  | 6.10 |  | 17,141 |  |  | $ | 13.70 |
$ | 14.76 |  |  | 9,260 |  |  | $ | 14.76 |  |  | 7.14 |  | 3,704 |  |  | $ | 14.76 |
$ | 16.01 |  |  | 28,569 |  |  | $ | 16.01 |  |  | 8.11 |  | 6,696 |  |  | $ | 16.01 |
|  |  | 173,048 |  |  |  |  |  |  |  | 129,762 |  |  |  |
Summary of Stock Awards Plan activity | A summary of plan activity for the 2005 and 2015 Stock Awards Plans is as follows:
| Shares |  | Weighted Average Grant Date Fair Value
Outstanding at December 28, 2013 | 19,252 |  |  | $ | 11.15 |
Granted October 16, 2014 | 31,080 |  |  | $ | 15.69 |
Granted November 21, 2014 | 23,665 |  |  | $ | 15.85 |
Vested | (7,434 | ) |  | $ | 10.60 |
Forfeited | (160 | ) |  | $ | 13.34 |
Outstanding at January 3, 2015 | 66,403 |  |  | $ | 15.00 |
Granted January 5, 2015 | 3,000 |  |  | $ | 17.95 |
Vested | (17,903 | ) |  | $ | 13.86 |
Forfeited | (60 | ) |  | $ | 13.34 |
Outstanding at December 31, 2015 | 51,440 |  |  | $ | 15.57 |
Granted February 19, 2016 | 50,062 |  |  | $ | 7.51 |
Granted May 5, 2016 | 42,348 |  |  | $ | 8.05 |
Vested | (21,133 | ) |  | $ | 13.12 |
Forfeited | (1,260 | ) |  | $ | 17.73 |
Outstanding at December 31, 2016 | 121,457 |  |  | $ | 10.03 |

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