Stockholders' Equity (Details) (USD $) In Millions, except Share data, unless otherwise specified	0 Months Ended				12 Months Ended
	Dec. 23, 2014	Aug. 22, 2014	Jul. 09, 2012	Jan. 06, 2010	Dec. 29, 2014	Dec. 30, 2013	May 08, 2013
Rights offering and private placement of common stock [Line Items]
Number of shares of common stock issued (in shares)	13,300,000	3,900,000
Par value of common stock issued (in dollars per share)					$ 0.01	$ 0.01	$ 0.01
Net proceeds from the rights offering and private placement of common stock	$ 19.7		$ 12.6
Minimum percentage of stock ownership required to effect ownership change (in hundredths)	5.00%		5.00%	5.00%	5.00%
Minimum percentage points by which aggregate stock ownership of holders of at least 5% of stock must increase to effect ownership change (in hundredths)	50.00%		50.00%	50.00%	50.00%
Period over which aggregate stock ownership of holders of at least 5% of stock must increase to effect ownership change	3 years		3 years	3 years	3 years
Rights offering [Member]
Rights offering and private placement of common stock [Line Items]
Number of shares of common stock issued (in shares)	13,333,329		4,915,461
Par value of common stock issued (in dollars per share)	$ 0.01		$ 0.01
Subscription price (in dollars per share)	$ 1.50		$ 2.60
Private placement [Member]
Rights offering and private placement of common stock [Line Items]
Number of shares of common stock issued (in shares)			633,581
Par value of common stock issued (in dollars per share)			$ 0.01
Subscription price (in dollars per share)			$ 2.60