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Acquisitions - Schedule of Cash Paid and Acquired for Acquisitions (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2021 USD ($) acquisition	Mar. 31, 2020 USD ($) acquisition	Dec. 31, 2020 acquisition
Business Combination, Separately Recognized Transactions [Line Items]
Cash acquired	$ (1,326)	$ (1,986)
Net cash paid	$ 57,975	$ 39,329
Series of Individually Immaterial Business Acquisitions
Business Combination, Separately Recognized Transactions [Line Items]
Number of acquisitions | acquisition	3	6	2
Cash paid at closing	$ 59,301	$ 98,298
Cash acquired	(1,326)	(5,266)
Net cash paid	$ 57,975	$ 93,032

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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3179-108585

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The number of businesses acquired by the entity during the period.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=120321790&loc=d3e6927-128479

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

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- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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