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Business Combinations - Additional Information (Detail) - USD ($)
1 Months Ended 12 Months Ended
Jan. 01, 2019
Sep. 04, 2018
Aug. 01, 2018
Jan. 31, 2018
Sep. 01, 2017
Dec. 27, 2016
Dec. 01, 2016
May 31, 2019
May 31, 2018
Apr. 01, 2019
Feb. 28, 2019
Dec. 31, 2018
Apr. 30, 2018
Jan. 01, 2018
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life               10 years 11 years          
Quat-Chem Ltd.                            
Business Acquisition [Line Items]                            
Cash consideration for purchase of business             $ 21,606,000              
Contingent consideration potential payment $ 184,000           3,778,000             $ 249,000
Purchase price allocation for accounts receivable             4,684,000              
Purchase price allocation for inventory             1,243,000              
Purchase price allocation for land, property and equipment             2,526,000              
Allocation of purchase price for contingent consideration potential payment             1,058,000 $ 554,000            
Purchase price allocation for intangible assets             6,900,000              
Reverse the remaining contingent consideration accrual to other income       $ 255,000                    
Purchase price allocation for non-amortizable intangible assets             1,889,000              
Purchase price allocation for accounts payable             2,197,000              
Purchase price allocation for deferred tax liability             1,758,000              
Purchase price allocation for other current liabilities             $ 604,000              
Rogama Industria e Comercio, Ltda.                            
Business Acquisition [Line Items]                            
Cash consideration for purchase of business           $ 12,423,000                
Contingent consideration potential payment           2,069,000       $ 23,000     $ 130,000  
Purchase price allocation for accounts receivable           1,866,000                
Purchase price allocation for inventory           960,000                
Purchase price allocation for land, property and equipment           4,734,000                
Allocation of purchase price for contingent consideration potential payment           213,000   $ 83,000            
Purchase price allocation for intangible assets           5,112,000                
Purchase price allocation for non-amortizable intangible assets           870,000                
Purchase price allocation for deferred tax liability           2,034,000                
Purchase price allocation for current liabilities           2,562,000                
Purchase price allocation for other non-current assets           $ 26,000                
The University of Queensland Animal Genetics Laboratory                            
Business Acquisition [Line Items]                            
Cash consideration for purchase of business         $ 468,000                  
Purchase price allocation for inventory         19,000                  
Purchase price allocation for land, property and equipment         419,000                  
Purchase price allocation for intangible assets         902,000                  
Consideration for purchase of business         2,063,000                  
Purchase price allocation for long-term liabilities         $ 1,629,000                  
Clarus Labs Inc [Member]                            
Business Acquisition [Line Items]                            
Cash consideration for purchase of business     $ 4,204,000                      
Contingent consideration potential payment     1,300,000               $ 90,000      
Purchase price allocation for inventory     32,000                      
Purchase price allocation for land, property and equipment     120,000                      
Allocation of purchase price for contingent consideration potential payment     1,256,000                      
Purchase price allocation for intangible assets     1,487,000                      
Purchase price allocation for non-amortizable intangible assets     878,000                      
Purchase price allocation for accounts payable     53,000                      
Purchase price allocation for deferred tax liability     $ 544,000                      
Livestock Genetic Services LLC [Member]                            
Business Acquisition [Line Items]                            
Cash consideration for purchase of business   $ 1,100,000                        
Contingent consideration potential payment   385,000                        
Purchase price allocation for land, property and equipment   15,000                        
Allocation of purchase price for contingent consideration potential payment   385,000                        
Purchase price allocation for intangible assets   942,000                        
Cash payable to former owner for purchase of business   400,000                        
Cash paid for purchase of business   $ 700,000                        
Edmonton Albertabased Delta Genomics Centre [Member]                            
Business Acquisition [Line Items]                            
Cash consideration for purchase of business 1,485,000                          
Purchase price allocation for inventory 38,000                          
Purchase price allocation for land, property and equipment                       $ 371,000    
Purchase price allocation for intangible assets 532,000                          
Purchase price allocation for deferred tax liability $ 125,000                          
Minimum                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life               5 years            
Minimum | Quat-Chem Ltd.                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life             5 years              
Minimum | Rogama Industria e Comercio, Ltda.                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life           5 years                
Minimum | The University of Queensland Animal Genetics Laboratory                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life         5 years                  
Minimum | Clarus Labs Inc [Member]                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life     5 years                      
Minimum | Livestock Genetic Services LLC [Member]                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life   5 years                        
Minimum | Edmonton Albertabased Delta Genomics Centre [Member]                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life 5 years                          
Maximum                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life               25 years            
Maximum | Quat-Chem Ltd.                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life             15 years              
Maximum | Rogama Industria e Comercio, Ltda.                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life           15 years                
Maximum | The University of Queensland Animal Genetics Laboratory                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life         15 years                  
Maximum | Clarus Labs Inc [Member]                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life     15 years                      
Maximum | Livestock Genetic Services LLC [Member]                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life   15 years                        
Maximum | Edmonton Albertabased Delta Genomics Centre [Member]                            
Business Acquisition [Line Items]                            
Finite lived intangible assets, useful life 10 years