XML 30 R36.htm IDEA: XBRL DOCUMENT v2.4.0.8
Segment Reporting - Information about Reportable Segments (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Jan. 25, 2014
Jan. 26, 2013
Jan. 25, 2014
Jan. 26, 2013
Segment Reporting Information [Line Items]        
Net sales $ 1,082,679 $ 915,861 $ 2,961,638 $ 2,672,279
Operating income 96,651 89,538 253,155 249,999
Dental Supply [Member]
       
Segment Reporting Information [Line Items]        
Net sales 641,965 626,494 1,759,248 1,743,035
Operating income 73,513 66,049 181,846 172,670
Veterinary Supply [Member]
       
Segment Reporting Information [Line Items]        
Net sales 333,402 175,408 841,206 550,873
Operating income 12,003 9,942 33,175 29,380
Rehabilitation Supply [Member]
       
Segment Reporting Information [Line Items]        
Net sales 107,312 113,959 361,184 378,371
Operating income $ 11,135 $ 13,547 $ 38,134 $ 47,949