Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 28, 2013	Dec. 31, 2012
Accounts receivable, net of allowance	$ 0	$ 0
Redeemable convertible Series A preferred units, per unit value	$ 2.81	$ 2.81
Redeemable convertible Series A preferred units -units authorized	0	8,110,000
Redeemable convertible Series A preferred units - units issued	0	8,110,000
Redeemable convertible Series A preferred units - units outstanding	0	8,110,000
Common units, par value
Common units, units authorized	0	33,333,333
Common units, units issued	0	17,300,000
Common units, units outstanding	0	17,300,005
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	20,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	1,000,000,000
Common stock, shares issued	30,491,907
Common stock, shares outstanding	30,491,907
Treasury stock, par value
Treasury stock, authorized	8,110,000	8,110,000
Treasury stock, outstanding	8,110,000	8,110,000