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Geographic Information and Business Segments - Revenues by Geographic Area (Details) - USD ($) $ in Thousands |  | 3 Months Ended
--- | --- | ---
Jan. 02, 2018 | Mar. 31, 2019 | Mar. 31, 2018
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | $ 362,991 | $ 815,053
BondPoint | Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |
Revenues from External Customers [Line Items] |  |  |
Gain on sale of BondPoint | $ 337,550 |  | 337,600
United States |  |  |
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | 291,336 | 743,152
Ireland |  |  |
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | 35,675 | 14,023
United Kingdom |  |  |
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | 284 | 11,600
Singapore |  |  |
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | 26,838 | 46,200
Canada |  |  |
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | 5,212 | 0
Australia |  |  |
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | 3,302 | 0
Others |  |  |
Revenues from External Customers [Line Items] |  |  |
Total revenue |  | $ 344 | $ 78

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599 + Details
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