Pension and Other Postretirement Benefit Plans (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 28, 2012	Dec. 30, 2011	Dec. 28, 2012	Dec. 30, 2011
Pension Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	$ 49	$ 53	$ 93	$ 99
Interest cost	1,311	1,517	2,619	3,027
Expected return on plan assets	(1,580)	(1,928)	(3,151)	(3,847)
Amortization of net loss	835	580	1,669	1,160
Net periodic benefit cost	615	222	1,230	439
Expected contribution to its pension plan in 2013	4,352,000		4,352,000
Contributions made during period			3,562,000
Postretirement Benefits [Member]
Components of net periodic benefit cost [Abstract]
Service cost	9	10	17	21
Interest cost	191	247	383	493
Amortization of net loss	197	105	395	210
Net periodic benefit cost	$ 397	$ 362	$ 795	$ 724