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Acquisitions, Litigation, and Other Charges - Components of Charges (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Acquisition, Litigation and Other Special Charges [Abstract] |  |  |  |
Acquisition related costs | $ 4,861 | $ 2,671 | $ 8,278 | $ 19,126
Litigation | 258 | 197 | 258 | 1,574
Severance, equity award modifications and acceleration | (50) | 1,031 | 1,022 | 7,965
Non-offering related equity issuance expenses | 0 | (29) | 0 | 1,318
Terminated site operations costs | (520) | (90) | (520) | 254
Other | 733 | 0 | 733 | 0
Acquisition, litigation and other | $ 5,282 | $ 3,780 | $ 9,771 | $ 30,237

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- Definition Amount of expense classified as other. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.4,6) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.7) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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