Business Segments and Significant Customers (Details 2) (USD $)
In Thousands, unless otherwise specified
 0 Months Ended 3 Months Ended 12 Months Ended
Nov. 05, 2012
Dec. 27, 2014
Sep. 27, 2014
Jun. 28, 2014
Mar. 29, 2014
Dec. 28, 2013
Sep. 28, 2013
Jun. 29, 2013
Mar. 30, 2013
Dec. 29, 2012
Sep. 29, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 27, 2014
item
Dec. 28, 2013
Dec. 29, 2012
Business segments and significant customers                                
Number of reportable segments                           2    
Net revenues from external customers   $ 73,746 $ 72,556 $ 71,852 $ 67,509 $ 58,852 $ 54,514 $ 53,667 $ 48,537 $ 43,542 $ 46,601 $ 48,016 $ 47,020 $ 285,663 $ 215,580 $ 185,179
Depreciation and amortization included in segment gross profit                           4,636 3,437 2,929
Segment gross profit   15,176 12,926 13,456 11,563 10,869 10,056 9,136 8,825 8,872 9,471 9,204 9,345 53,121 38,886 36,892
Goodwill   23,286       23,064       11,616       23,286 23,064 11,616
Reconciliation of reportable segment gross profit to consolidated income before income tax provision                                
Segment gross profit   15,176 12,926 13,456 11,563 10,869 10,056 9,136 8,825 8,872 9,471 9,204 9,345 53,121 38,886 36,892
Operating expenses                           34,188 28,036 25,548
Gain on sale of DSD business (1,100)                             (1,101)
Interest expense, net                           2,604 872 764
Income before income tax expense                           16,329 9,978 11,681
Frozen Products [Member]                                
Business segments and significant customers                                
Net revenues from external customers                           179,518 117,124 90,823
Depreciation and amortization included in segment gross profit                           2,103 1,265 932
Segment gross profit                           32,329 22,745 17,505
Goodwill   17,300       17,078       5,630       17,300 17,078 5,630
Reconciliation of reportable segment gross profit to consolidated income before income tax provision                                
Segment gross profit                           32,329 22,745 17,505
Snack Products [Member]                                
Business segments and significant customers                                
Net revenues from external customers                           106,145 98,456 94,356
Depreciation and amortization included in segment gross profit                           2,533 2,172 1,997
Segment gross profit                           20,792 16,141 19,387
Goodwill   5,986       5,986       5,986       5,986 5,986 5,986
Reconciliation of reportable segment gross profit to consolidated income before income tax provision                                
Segment gross profit                           $ 20,792 $ 16,141 $ 19,387