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Business Combinations - Additional Information (Detail) - USD ($) |  |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
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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 |  |  |  |  |  |  |  |  |  |  |  |  |

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