Stock-Based Compensation Plan (Details) (USD $)	0 Months Ended	6 Months Ended
	May 24, 2012	Jun. 29, 2013 Selling, general and administrative expenses	Jun. 30, 2012 Selling, general and administrative expenses	Jun. 29, 2013 Cost of goods sold	Jun. 30, 2012 Cost of goods sold	Jun. 29, 2013 Minimum	Jun. 29, 2013 Maximum	Jun. 29, 2013 Option Awards	Jun. 30, 2012 Option Awards	Jun. 29, 2013 Restricted Stock Awards
Stock option information
Stock-based compensation expense		$ 1,400,000	$ 1,000,000	$ (282,000)	$ 301,000
Increase in the number of shares available under the Plan	400,000
Percentage of unvested award that will vest	50.00%
Weighted average assumptions
Expected option term						6 years		6 years 3 months	6 years 3 months
Expected volatility factor (as a percent)								64.71%	66.24%
Risk-free interest rate (as a percent)								1.10%	1.10%
Expected annual dividend yield (as a percent)								0.00%	0.00%
Period for which the entity has been public							3 years
Outstanding options, number of shares
Balance at the beginning of the period (in shares)								505,297
Granted (in shares)								562,151
Exercised (in shares)								(98,501)
Expired (in shares)								(8,759)
Forfeited (in shares)								(73,897)
Balance at the end of the period (in shares)								886,291
Exercisable at the end of the period (in shares)								116,767
Outstanding options, Weighted-Average Exercise Price
Balance at the beginning of the period (in dollars per share)								$ 13.21
Granted (in dollars per share)								$ 8.76
Exercised (in dollars per share)								$ 3.32
Expired (in dollars per share)								$ 19.76
Forfeited (in dollars per share)								$ 16.82
Balance at the end of the period (in dollars per share)								$ 11.12
Exercisable at the end of the period (in dollars per share)								$ 16.38
Outstanding options, Weighted-Average Remaining Contractual Term
Weighted-Average Remaining Contractual Term								9 years 1 month 6 days
Outstanding at the end of the period								7 years 6 months
Aggregate Intrinsic Value
Outstanding at the end of the period (in dollars)								2,958,000
Exercisable at the end of the period (in dollars)								31,000
Fair value of options exercised (in dollars)								927,000
Nonvested options, number of shares
Nonvested at the beginning of the period (in shares)								331,832
Granted (in shares)								562,151
Vested (in shares)								(50,562)
Forfeited (in shares)								(73,897)
Nonvested at the end of the period (in shares)								769,524
Nonvested options, weighted-average grant-date fair value
Nonvested at the beginning of the period (in dollars per share)								$ 9.07
Granted (in dollars per share)								$ 5.22
Vested (in dollars per share)								$ 8.46
Forfeited (in dollars per share)								$ 9.82
Nonvested at the end of the period (in dollars per share)								$ 6.23
Unrecognized compensation expense
Compensation cost related to nonvested stock option awards not yet recognized								3,200,000
Period over which unrecognized compensation expense is expected to be recognized								3 years 4 months 24 days		3 years 4 months 24 days
Number of Shares
Nonvested at the beginning of the period (in shares)										61,075
Granted (in shares)										277,095
Vested (in shares)										(26,484)
Forfeited (in shares)										(19,397)
Nonvested at the end of the period (in shares)										292,289
Weighted-Average Grant-Date Fair Value Per Share
Nonvested at the beginning of the period (in dollars per share)										$ 21.43
Granted (in dollars per share)										$ 9.39
Vested (in dollars per share)										$ 15.87
Forfeited (in dollars per share)										$ 24.16
Nonvested at the end of the period (in dollars per share)										$ 10.34
Fair value of restricted stock awards vested (in dollars)										299,000
Compensation cost related to nonvested restricted stock awards not yet recognized										$ 2,500,000