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Business Combinations - Aggregated Consideration And Preliminary Purchase Price Allocation (Details) - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |  |
Goodwill | $ 740,743 | $ 683,083 | $ 588,213
Series of Individually Immaterial Business Acquisitions |  |  |
Business Acquisition [Line Items] |  |  |
Common stock issued (in shares) | 207 | 339 |
Common stock value | $ 6,940 | $ 8,698 |
Cash paid | 66,651 | 73,372 |
Other payable | 0 | 59 |
Recorded contingent consideration | 39,665 | 38,901 |
Total recorded purchase price | 113,256 | 121,030 |
Accounts receivable acquired, net | 9,838 | 5,381 |
Fixed assets acquired | 1,473 | 0 |
Identifiable intangible assets acquired | 42,422 | 20,703 |
Operating lease right-of-use asset acquired, net | 19,153 | 2,746 |
Other assets acquired, net | 848 | 967 |
Operating lease liability acquired - current | (3,020) | (793) |
Other current liabilities acquired | (1,771) | (3,460) |
Operating lease liability acquired - noncurrent | (16,133) | (1,953) |
Goodwill | 60,446 | 97,439 |
Total net assets acquired | 113,256 | 121,030 |
Maximum potential contingent consideration | $ 41,720 | $ 43,052 |

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123413009&loc=d3e4845-128472 + Details
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