Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans (Details 1)

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Benefit Plans (Details 1) (Employee Stock Option [Member], USD $)
In Thousands, except Per Share data, unless otherwise specified
 6 Months Ended
Jun. 30, 2013
Employee Stock Option [Member]
  
Options  
Outstanding, options, beginning balance (in shares) 274,512
Granted, options (in shares) 10,718
Exercised, options (in shares) (15,962)
Forfeited, cancelled or expired, options (in shares) (3,231)
Outstanding, options, ending balance (in shares) 266,037
Exercisable, options (in shares) 81,882
Weighted- Average Exercise Price (1)  
Outstanding, weighted-average exercise price, beginning balance (in dollars per share) $ 1.92 [1]
Granted, weighted-average exercise price (in dollars per share) $ 3.31 [1]
Exercised, weighted-average exercise price (in dollars per share) $ 1.20 [1]
Forfeited, cancelled or expired, weighted-average exercise price (in dollars per share) $ 1.53 [1]
Outstanding, weighted-average exercise price, ending balance (in dollars per share) $ 2.03 [1]
Exercisable, weighted-average exercise price (in dollars per share) $ 2.70 [1]
Outstanding, weighted average remaining contractual term 6 years 11 months 23 days
Exercisable, weighted average remaining contractual term 4 years 7 months 24 days
Outstanding, aggregate intrinsic value $ 393,944
Exercisable, aggregate intrinsic value $ 95,545
[1] The weighted-average exercise price for options outstanding as of December 28, 2012 were adjusted in 2012 to reflect the reduction to the exercise price related to the December 28, 2012 special cash dividend.