Long-term Debt and Interest Rate Caps (Details 1) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012	Aug. 31, 2010
Interest Rate Caps
Interest Rate Caps, Payment Date	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 28, 2013	Mar. 29, 2013	Dec. 31, 2012	Sep. 28, 2012
Interest Rate Caps, Cap Rate	2.00%	2.00%	2.00%	2.00%	2.00%	2.00%	2.00%
Interest Rate Caps, Notional Amounts	$ 61,075	$ 61,775	$ 62,475	$ 63,175	$ 84,925	$ 85,825	$ 86,725
August 2010 Caps [Member]
Interest Rate Caps
Interest Rate Caps, Notional Amounts					66,675	67,375	68,075	103,300
July 2011 Caps [Member]
Interest Rate Caps
Interest Rate Caps, Notional Amounts	$ 61,075	$ 61,775	$ 62,475	$ 63,175	$ 18,250	$ 18,450	$ 18,650