Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Balance at December 28, 2014 | | | 755,617 | | | | 616,792 | | | | 276,635 | | | $ | 6.09 | | | | | — | | | | | | | | 2,250,000 | | | | — | | Forfeited/cancelled/expired | | | (6,000 | ) | | | | | | | 6,000 | | | | 9.19 | | | | | (25,088 | ) | | | | | | | — | | | | 9.62 | | | | | 1,695,000 | | | | | | | | (1,695,000 | ) | | | 9.07 | | Balance at December 31, 2015 | | | 2,419,529 | | | | 724,529 | | | | 837,635 | | | $ | 8.16 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Balance at December 29, 2013 | | | 798,171 | | | | 585,769 | | | | 263,424 | | | $ | 5.97 | | Forfeited/cancelled/expired | | | (25,211 | ) | | | | | | | 24,211 | | | | 5.19 | | | | | (28,343 | ) | | | | | | | — | | | | 4.73 | | | | | 11,000 | | | | | | | | (11,000 | ) | | | 9.18 | | Balance at December 28, 2014 | | | 755,617 | | | | 616,792 | | | | 276,635 | | | $ | 6.09 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Balance at December 30, 2012 | | | 764,034 | | | | 649,412 | | | | 437,797 | | | $ | 5.84 | | Forfeited/cancelled/expired | | | (53,377 | ) | | | | | | | 53,377 | | | | 6.25 | | | | | (140,236 | ) | | | | | | | — | | | | 5.52 | | | | | 227,750 | | | | | | | | (227,750 | ) | | | 6.18 | | Balance at December 29, 2013 | | | 798,171 | | | | 585,769 | | | | 263,424 | | | $ | 5.97 | |
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