XML 36 R49.htm IDEA: XBRL DOCUMENT v2.4.0.8
Segment Information (Detail) (USD $)
 3 Months Ended 12 Months Ended
May 31, 2013
Feb. 28, 2013
Nov. 30, 2012
Aug. 31, 2012
May 31, 2012
Feb. 29, 2012
Nov. 30, 2011
Aug. 31, 2011
May 31, 2013
May 31, 2012
May 31, 2011
Segment Reporting Information [Line Items]                      
Product revenues to external customers                 $ 184,134,000 $ 164,910,000 $ 154,664,000
Service revenues to external customers                 23,394,000 19,136,000 18,019,000
Total revenues to external customers 56,007,000 51,055,000 50,737,000 49,729,000 48,546,000 44,912,000 44,891,000 45,697,000 207,528,000 184,046,000 172,683,000
Operating income (loss)                 40,706,000 33,739,000 35,835,000
Depreciation and amortization                 7,411,000 6,173,000 5,329,000
Interest income                 144,000 107,000 95,000
Income taxes                 14,100,000 11,450,000 12,400,000
Total assets 290,558,000       251,600,000       290,558,000 251,600,000 219,662,000
Expenditures for long-lived assets                 8,897,000 12,413,000 7,796,000
Food Safety
                      
Segment Reporting Information [Line Items]                      
Product revenues to external customers                 102,971,000 90,460,000 85,514,000
Service revenues to external customers                 3,187,000 644,000 0
Total revenues to external customers                 106,158,000 91,104,000 85,514,000
Operating income (loss)                 27,366,000 23,932,000 24,305,000
Depreciation and amortization                 3,874,000 3,500,000 3,251,000
Interest income                 0 0 0
Income taxes                 9,182,000 7,795,000 8,410,000
Total assets 93,079,000       62,227,000       93,079,000 62,227,000 78,373,000
Expenditures for long-lived assets                 6,046,000 4,633,000 4,908,000
Animal Safety
                      
Segment Reporting Information [Line Items]                      
Product revenues to external customers                 81,163,000 74,450,000 69,150,000
Service revenues to external customers                 20,207,000 18,492,000 18,019,000
Total revenues to external customers                 101,370,000 92,942,000 87,169,000
Operating income (loss)                 15,858,000 12,039,000 13,342,000
Depreciation and amortization                 3,537,000 2,673,000 2,078,000
Interest income                 0 0 0
Income taxes                 4,770,000 3,589,000 4,617,000
Total assets 121,908,000       106,987,000       121,908,000 106,987,000 90,832,000
Expenditures for long-lived assets                 2,851,000 7,780,000 2,888,000
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)                 (2,518,000) [1] (2,232,000) [1] (1,812,000) [1]
Depreciation and amortization                 0 [1] 0 [1] 0 [1]
Interest income                 144,000 [1] 107,000 [1] 95,000 [1]
Income taxes                 148,000 [1] 66,000 [1] (627,000) [1]
Total assets 75,571,000 [1]       82,386,000 [1]       75,571,000 [1] 82,386,000 [1] 50,457,000 [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.