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Schedule of Stock Options Activity (Details) - Jun. 28, 2015 - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
Total
Number Of Shares  
Balance outstanding at beginning of period, in shares 5,682
Granted, in shares 80
Forfeited or expired, in shares (174)
Exercised, in shares (117)
Balance outstanding at end of period, in shares 5,471
Exercisable, in shares 4,631
Vested and expected to vest, in shares 5,317
Weighted Average Exercise Price  
Balance outstanding at beginning of period, in dollars per share $ 2.67
Granted, in dollars per share 2.00
Forfeited or expired, in dollars per share 3.41
Exercised, in dollars per share 0.98
Balance outstanding at end of period, in dollars per share 2.67
Exercisable, in dollars per share 2.61
Vested and expected to vest, in dollars per share $ 2.66
Weighted Average Remaining Term  
Balance outstanding 4 years 10 months 2 days
Exercisable 4 years 2 months 12 days
Vested and expected to vest 4 years 8 months 19 days
Aggregate Intrinsic Value  
Balance outstanding $ 292
Exercisable 292
Vested and expected to vest $ 292