Secured Revolving Line of Credit Interest rate description (Details)	6 Months Ended
	Jun. 27, 2015
Greater than or equal to 66.66% of the Revolver Commitment
Secured Revolving Line of Credit
Base rate	0.50%
LIBOR	1.50%
Greater than or equal to 33.33% of the Revolver Commitment, less than 66.66%
Secured Revolving Line of Credit
Base rate	0.75%
LIBOR	1.75%
Less than 33.33% of the Revolver Commitment
Secured Revolving Line of Credit
Base rate	1.00%
LIBOR	2.00%