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Payment of contingent consideration.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of increase (decrease) in the value of right to a contingent consideration asset.

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Amount of increase (decrease) in the value of a contingent consideration liability, including, but not limited to, differences arising upon settlement.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The amount of liability arising from an inherited contingency (as defined) which has been recognized as of the acquisition date.

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Amount of other assets expected to be realized or consumed before one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of other liabilities due within one year or within the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary difference assumed at the acquisition date that are classified as noncurrent.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount of long-term debt due after one year or the normal operating cycle, if longer, assumed at the acquisition date.

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Amount of other assets expected to be realized or consumed after one year or the normal operating cycle, if longer, acquired at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Business Combinations - Additional Information (Detail) - USD ($) $ in Thousands									1 Months Ended					12 Months Ended
	Sep. 01, 2017	Dec. 27, 2016	Dec. 01, 2016	May 01, 2016	Apr. 26, 2016	Dec. 22, 2015	Aug. 26, 2015	Jun. 01, 2015	Jun. 30, 2018	Jan. 31, 2018	Jun. 30, 2017	Jul. 31, 2016	May 31, 2016	May 31, 2018	May 31, 2017	May 31, 2016	May 31, 2019	Apr. 30, 2018
Business Acquisition [Line Items]
Finite lived intangible assets, useful life														11 years	11 years
Minimum
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
Sterling Test House
Business Acquisition [Line Items]
Cash consideration for purchase of business								$ 1,118
Contingent consideration potential payment								102
Purchase price allocation for accounts receivable								43
Purchase price allocation for inventory								14
Purchase price allocation for land, property and equipment								141
Allocation of purchase price for contingent consideration potential payment								102
Purchase price allocation for intangible assets								$ 345
Cash paid for contingent consideration												$ 70
Reverse the remaining contingent consideration accrual to other income													$ 32
Sterling Test House \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life								5 years
Sterling Test House \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life								15 years
Lab M Holdings
Business Acquisition [Line Items]
Cash consideration for purchase of business							$ 12,436
Purchase price allocation for accounts receivable							975
Purchase price allocation for inventory							1,169
Purchase price allocation for land, property and equipment							3,337
Purchase price allocation for intangible assets							3,611
Purchase price allocation for cash							285
Purchase price allocation for other current assets							309
Purchase price allocation for current liabilities							948
Purchase price allocation for deferred tax liability							$ 784
Lab M Holdings \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life							5 years
Lab M Holdings \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life							15 years
Virbac Corporation
Business Acquisition [Line Items]
Cash consideration for purchase of business						$ 3,525
Contingent consideration potential payment						300
Purchase price allocation for inventory						317
Purchase price allocation for land, property and equipment						60
Purchase price allocation for intangible assets						1,759
Purchase price allocation for current liabilities						$ 300
Purchase price allocation for contingent consideration																$ 300
Virbac Corporation \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life						5 years
Virbac Corporation \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life						15 years
Deoxi Biotecnologia Ltd
Business Acquisition [Line Items]
Cash consideration for purchase of business					$ 1,549
Contingent consideration potential payment					2,552						$ 393
Purchase price allocation for accounts receivable					132
Purchase price allocation for inventory					89
Purchase price allocation for land, property and equipment					232
Allocation of purchase price for contingent consideration potential payment					453
Purchase price allocation for intangible assets					350
Reverse the remaining contingent consideration accrual to other income											$ 14
Purchase price allocation for other current assets					9
Purchase price allocation for current liabilities					266
Purchase price allocation for deferred tax liability					$ 184
Deoxi Biotecnologia Ltd \| Subsequent Event
Business Acquisition [Line Items]
Contingent consideration potential payment									$ 122
Reverse the remaining contingent consideration accrual to other expense									$ 42
Deoxi Biotecnologia Ltd \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life					5 years
Deoxi Biotecnologia Ltd \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life					10 years
Tetradyne LLC
Business Acquisition [Line Items]
Cash consideration for purchase of business				$ 24,245
Purchase price allocation for accounts receivable				1,629
Purchase price allocation for inventory				1,964
Purchase price allocation for land, property and equipment				1,625
Purchase price allocation for intangible assets				11,950
Purchase price allocation for other current assets				269
Purchase price allocation for current liabilities				987
Purchase price allocation for long-term liabilities				$ 660
Tetradyne LLC \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life				5 years
Tetradyne LLC \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life				15 years
Quat-Chem Ltd.
Business Acquisition [Line Items]
Cash consideration for purchase of business			$ 21,606
Contingent consideration potential payment			3,778							$ 249
Purchase price allocation for accounts receivable			4,684
Purchase price allocation for inventory			1,243
Purchase price allocation for land, property and equipment			2,526
Allocation of purchase price for contingent consideration potential payment			1,058
Purchase price allocation for intangible assets			6,900
Reverse the remaining contingent consideration accrual to other income										$ 255
Purchase price allocation for non-amortizable intangible assets			1,889
Purchase price allocation for accounts payable			2,197
Purchase price allocation for deferred tax liability			1,758
Purchase price allocation for other current liabilities			$ 604
Quat-Chem Ltd. \| Scenario forecast
Business Acquisition [Line Items]
Allocation of purchase price for contingent consideration potential payment																	$ 554
Quat-Chem Ltd. \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life			5 years
Quat-Chem Ltd. \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life			15 years
Rogama Industria e Comercio, Ltda.
Business Acquisition [Line Items]
Cash consideration for purchase of business		$ 12,423
Contingent consideration potential payment		2,069																$ 130
Purchase price allocation for accounts receivable		1,866
Purchase price allocation for inventory		960
Purchase price allocation for land, property and equipment		4,734
Allocation of purchase price for contingent consideration potential payment		213
Purchase price allocation for intangible assets		5,112
Purchase price allocation for current liabilities		2,562
Purchase price allocation for non-amortizable intangible assets		870
Purchase price allocation for deferred tax liability		2,034
Purchase price allocation for other non-current assets		$ 26
Rogama Industria e Comercio, Ltda. \| Scenario forecast
Business Acquisition [Line Items]
Allocation of purchase price for contingent consideration potential payment																	$ 83
Rogama Industria e Comercio, Ltda. \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life		5 years
Rogama Industria e Comercio, Ltda. \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life		15 years
The University of Queensland Animal Genetics Laboratory
Business Acquisition [Line Items]
Cash consideration for purchase of business	$ 468
Purchase price allocation for inventory	19
Purchase price allocation for land, property and equipment	419
Purchase price allocation for intangible assets	902
Purchase price allocation for long-term liabilities	1,629
Consideration for purchase of business	$ 2,063
The University of Queensland Animal Genetics Laboratory \| Minimum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life	5 years
The University of Queensland Animal Genetics Laboratory \| Maximum
Business Acquisition [Line Items]
Finite lived intangible assets, useful life	15 years
Trademarks \| Virbac Corporation
Business Acquisition [Line Items]
Purchase price allocation for non-amortizable intangible assets						$ 200
Trademarks \| Deoxi Biotecnologia Ltd
Business Acquisition [Line Items]
Purchase price allocation for non-amortizable intangible assets					$ 193
Trademarks \| Tetradyne LLC
Business Acquisition [Line Items]
Purchase price allocation for non-amortizable intangible assets				$ 2,600