XML 68 R49.htm IDEA: XBRL DOCUMENT v2.4.0.8
Segment Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
May 31, 2014
Feb. 28, 2014
Nov. 30, 2013
Aug. 31, 2013
May 31, 2013
Feb. 28, 2013
Nov. 30, 2012
Aug. 31, 2012
May 31, 2014
May 31, 2013
May 31, 2012
Segment Reporting Information [Line Items]                      
Product revenues to external customers                 $ 219,734,000 $ 184,134,000 $ 164,910,000
Service revenues to external customers                 27,671,000 23,394,000 19,136,000
Total revenues to external customers 67,262,000 61,996,000 59,599,000 58,548,000 56,007,000 51,055,000 50,737,000 49,729,000 247,405,000 207,528,000 184,046,000
Operating income (loss)                 43,391,000 40,706,000 33,739,000
Depreciation and amortization                 9,180,000 7,411,000 6,173,000
Total assets 345,301,000       290,558,000       345,301,000 290,558,000 251,600,000
Expenditures for long-lived assets                 11,543,000 8,897,000 12,413,000
Operating Segments | Food Safety
                      
Segment Reporting Information [Line Items]                      
Product revenues to external customers                 111,545,000 102,971,000 90,460,000
Service revenues to external customers                 4,745,000 3,187,000 644,000
Total revenues to external customers                 116,290,000 106,158,000 91,104,000
Operating income (loss)                 28,009,000 27,366,000 23,932,000
Depreciation and amortization                 4,181,000 3,874,000 3,500,000
Total assets 105,607,000       93,079,000       105,607,000 93,079,000 62,227,000
Expenditures for long-lived assets                 5,999,000 6,046,000 4,633,000
Operating Segments | Animal Safety
                      
Segment Reporting Information [Line Items]                      
Product revenues to external customers                 108,189,000 81,163,000 74,450,000
Service revenues to external customers                 22,926,000 20,207,000 18,492,000
Total revenues to external customers                 131,115,000 101,370,000 92,942,000
Operating income (loss)                 18,571,000 15,858,000 12,039,000
Depreciation and amortization                 4,999,000 3,537,000 2,673,000
Total assets 173,643,000       121,908,000       173,643,000 121,908,000 106,987,000
Expenditures for long-lived assets                 5,544,000 2,851,000 7,780,000
Corporate Eliminations
                      
Segment Reporting Information [Line Items]                      
Product revenues to external customers                 0 [1] 0 [1] 0 [1]
Service revenues to external customers                 0 [1] 0 [1] 0 [1]
Total revenues to external customers                 0 [1] 0 [1] 0 [1]
Operating income (loss)                 (3,189,000) [1] (2,518,000) [1] (2,232,000) [1]
Depreciation and amortization                 0 [1] 0 [1] 0 [1]
Total assets 66,051,000 [1]       75,571,000 [1]       66,051,000 [1] 75,571,000 [1] 82,386,000 [1]
Expenditures for long-lived assets                 $ 0 [1] $ 0 [1] $ 0 [1]
[1] Includes corporate assets, including cash and cash equivalents, marketable securities, current and deferred tax accounts, and overhead expenses not allocated to specific business segments. Also includes the elimination of intersegment transactions and noncontrolling interests.