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Stockholders' Equity (Details 1) (USD $)
 12 Months Ended
Dec. 29, 2012
Range One [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 0.82
Range of Exercise Prices, Upper Range Limit $ 1.00
Options Outstanding, Number of Shares 159,645
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 2 years 8 months 16 days
Options Outstanding, Weighted Average Exercise Price $ 0.90
Options Vested and Exercisable, Number of Shares Exercisable 158,855
Options Vested and Exercisable, Weighted Average Exercise Price $ 0.90
Range Two [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 2.24
Range of Exercise Prices, Upper Range Limit $ 2.38
Options Outstanding, Number of Shares 166,531
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 2 years 1 month 28 days
Options Outstanding, Weighted Average Exercise Price $ 2.33
Options Vested and Exercisable, Number of Shares Exercisable 161,232
Options Vested and Exercisable, Weighted Average Exercise Price $ 2.33
Range Three [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 2.41
Range of Exercise Prices, Upper Range Limit $ 2.78
Options Outstanding, Number of Shares 185,237
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 2 years 22 days
Options Outstanding, Weighted Average Exercise Price $ 2.56
Options Vested and Exercisable, Number of Shares Exercisable 185,237
Options Vested and Exercisable, Weighted Average Exercise Price $ 2.56
Range Four [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 2.93
Range of Exercise Prices, Upper Range Limit $ 3.52
Options Outstanding, Number of Shares 163,651
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 2 years 5 months 9 days
Options Outstanding, Weighted Average Exercise Price $ 3.26
Options Vested and Exercisable, Number of Shares Exercisable 128,378
Options Vested and Exercisable, Weighted Average Exercise Price $ 3.24
Range Five [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 3.53
Range of Exercise Prices, Upper Range Limit $ 3.75
Options Outstanding, Number of Shares 147,000
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 5 years 4 months 6 days
Options Outstanding, Weighted Average Exercise Price $ 3.66
Options Vested and Exercisable, Number of Shares Exercisable 55,031
Options Vested and Exercisable, Weighted Average Exercise Price $ 3.64
Range Six [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 3.86
Range of Exercise Prices, Upper Range Limit $ 3.86
Options Outstanding, Number of Shares 188,500
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 6 years 11 months 16 days
Options Outstanding, Weighted Average Exercise Price $ 3.86
Options Vested and Exercisable, Number of Shares Exercisable 0
Options Vested and Exercisable, Weighted Average Exercise Price $ 0.00
Range Seven [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 3.89
Range of Exercise Prices, Upper Range Limit $ 4.31
Options Outstanding, Number of Shares 226,073
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 4 years 11 months 23 days
Options Outstanding, Weighted Average Exercise Price $ 4.11
Options Vested and Exercisable, Number of Shares Exercisable 114,659
Options Vested and Exercisable, Weighted Average Exercise Price $ 4.16
Range Eight [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 4.43
Range of Exercise Prices, Upper Range Limit $ 5.56
Options Outstanding, Number of Shares 221,419
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 1 year 4 months 28 days
Options Outstanding, Weighted Average Exercise Price $ 5.20
Options Vested and Exercisable, Number of Shares Exercisable 221,419
Options Vested and Exercisable, Weighted Average Exercise Price $ 5.20
Range Nine [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 5.69
Range of Exercise Prices, Upper Range Limit $ 9.79
Options Outstanding, Number of Shares 108,487
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 1 year 2 months 9 days
Options Outstanding, Weighted Average Exercise Price $ 7.33
Options Vested and Exercisable, Number of Shares Exercisable 108,487
Options Vested and Exercisable, Weighted Average Exercise Price $ 7.33
Range Ten [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 10.06
Range of Exercise Prices, Upper Range Limit $ 10.06
Options Outstanding, Number of Shares 4,000
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 1 year 2 months 1 day
Options Outstanding, Weighted Average Exercise Price $ 10.06
Options Vested and Exercisable, Number of Shares Exercisable 4,000
Options Vested and Exercisable, Weighted Average Exercise Price $ 10.06
Range Eleven [Member]
  
Stock options outstanding and exercisable  
Range of Exercise Prices, Lower Range Limit $ 0.82
Range of Exercise Prices, Upper Range Limit $ 10.06
Options Outstanding, Number of Shares 1,570,543
Options Outstanding, Weighted Average Remaining Contractual Life (Years) 3 years 4 months 2 days
Options Outstanding, Weighted Average Exercise Price $ 3.63
Options Vested and Exercisable, Number of Shares Exercisable 1,137,298
Options Vested and Exercisable, Weighted Average Exercise Price $ 3.58