Earnings per Share - Additional Information (Detail) In Millions, unless otherwise specified	6 Months Ended		3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Mar. 31, 2014 Consolidated Graphics, Inc	Mar. 31, 2014 Esselte Corporation
Earnings Per Share [Abstract]
Treasury stock, shares acquired	0	0
Stock issued in conjunction with acquisitions, shares			16.0	1.0