Unaudited Quarterly Financial Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Jul. 31, 2014		Apr. 30, 2014		Jan. 31, 2014		Oct. 31, 2013		Jul. 31, 2013		Apr. 30, 2013		Jan. 31, 2013		Oct. 31, 2012		Jul. 31, 2014	Jul. 31, 2013	Jul. 31, 2012
Net sales	$ 316,733		$ 309,577		$ 291,194		$ 307,530		$ 310,592		$ 302,483		$ 272,702		$ 272,015		$ 1,225,034	$ 1,157,792	$ 1,071,504
Gross margin	154,061		155,120		142,536		157,847		157,871		159,401		141,891		150,185		609,564	609,348	590,969
Operating income (loss)	(116,013)	[1]	26,767	[1]	18,346	[1]	29,689	[1]	(178,524)	[1]	30,935	[1]	21,797	[1]	43,236	[1]	(41,211)	(82,556)	157,663
Earnings (loss) from continuing operations	(96,981)		20,183		10,517		18,135		(175,557)		21,680		(10,671)		26,291		(48,146)	(138,257)	103,493
Earnings (loss) from discontinued operations, net of income taxes	(13,428)	[2]	3,904		5,907		5,795		(1,714)		(17,447)	[2]	1,987		896		2,178	(16,278)	(121,404)
Nonvoting Common Stock [Member]
Earnings (loss) from continuing operations																	$ (48,238)	$ (138,495)	$ 103,264
Net earnings (loss) from continuing operations per Class A Common Share:
Basic (in dollars per share)	$ (1.89)	[3]	$ 0.39	[3]	$ 0.20	[3]	$ 0.35	[3]	$ (3.40)	[3]	$ 0.42	[3]	$ (0.21)	[3]	$ 0.51	[3]	$ (0.93)	$ (2.70)	$ 1.97
Diluted (in dollars per share)	$ (1.89)	[3]	$ 0.39	[3]	$ 0.20	[3]	$ 0.35	[3]	$ (3.40)	[3]	$ 0.42	[3]	$ (0.21)	[3]	$ 0.51	[3]	$ (0.93)	$ (2.70)	$ 1.95
Earnings (loss) from discontinued operations per Class A Common Share:
Basic (in dollars per share)	$ (0.26)	[3]	$ 0.08	[3]	$ 0.11	[3]	$ 0.11	[3]	$ (0.03)	[3]	$ (0.34)	[3]	$ 0.04	[3]	$ 0.02	[3]	$ 0.04	$ (0.32)	$ (2.31)
Diluted (in dollars per share)	$ (0.26)	[3]	$ 0.08	[3]	$ 0.11	[3]	$ 0.11	[3]	$ (0.03)	[3]	$ (0.34)	[3]	$ 0.04	[3]	$ 0.02	[3]	$ 0.04	$ (0.32)	$ (2.29)

[1] * In fiscal 2014, the Company recorded before tax impairment charges of $148,551 in the fourth quarter ended July 31, 2014 and before tax restructuring charges of $6,840, $4,324, $3,039 and $809 in the first, second, third, and fourth quarters of fiscal 2014, respectively, for a total of $15,012. In fiscal 2013, the Company recorded before tax impairment charges of $204,448 in the fourth quarter ended July 31, 2013 and before tax restructuring charges of $1,933, $8,540 and $15,573 in the second, third and fourth quarters of fiscal 2013, respectively, for a total of $26,046.

[2] ** In fiscal 2014, the Company recorded restructuring charges of $6,989 and a loss on the sale of the Die Cut business of $1,602 in discontinued operations in the fourth quarter ended July 31, 2014. In fiscal 2013, the Company recorded a $15,658 loss to write-down the Die-Cut business to its estimated fair value less costs to sell in the three months ended April 30, 2013.

[3] *** The sum of the quarters does not equal the year-to-date total for fiscal 2014 and fiscal 2013 due to the quarterly changes inweighted-average shares outstanding.