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Operating Segment and Enterprise Wide Reporting (Tables) | 12 Months Ended
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Dec. 31, 2017
Segment Reporting [Abstract] |
Schedule of Information about Reportable Segments | The following tables present information about reportable segments (in thousands):
|  |  |  |  |  |  |  |  |  | Project |  |  |  |  |
|  | Product |  |  | Research |  |  | Consulting |  |  | Consolidated |
Year Ended December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research services revenues |  | $ | 216,471 |  |  | $ | — |  |  | $ | — |  |  | $ | 216,471 |
Advisory services and events revenues |  |  | 21,887 |  |  |  | 45,054 |  |  |  | 54,261 |  |  |  | 121,202 |
Total segment revenues |  |  | 238,358 |  |  |  | 45,054 |  |  |  | 54,261 |  |  |  | 337,673 |
Segment expenses |  |  | 45,205 |  |  |  | 48,812 |  |  |  | 25,477 |  |  |  | 119,494 |
Contribution margin (loss) |  |  | 193,153 |  |  |  | (3,758 | ) |  |  | 28,784 |  |  |  | 218,179 |
Selling, marketing, administrative and other expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (189,849 | )
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (781 | )
Reorganization costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  | — |
Other income and losses on investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (178 | )
Income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 27,371 |
|  |  |  |  |  |  |  |  |  | Project |  |  |  |  |
|  | Product |  |  | Research |  |  | Consulting |  |  | Consolidated |
Year Ended December 31, 2016 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research services revenues |  | $ | 215,216 |  |  | $ | — |  |  | $ | — |  |  | $ | 215,216 |
Advisory services and events revenues |  |  | 20,374 |  |  |  | 44,631 |  |  |  | 45,874 |  |  |  | 110,879 |
Total segment revenues |  |  | 235,590 |  |  |  | 44,631 |  |  |  | 45,874 |  |  |  | 326,095 |
Segment expenses |  |  | 41,528 |  |  |  | 47,496 |  |  |  | 23,141 |  |  |  | 112,165 |
Contribution margin (loss) |  |  | 194,062 |  |  |  | (2,865 | ) |  |  | 22,733 |  |  |  | 213,930 |
Selling, marketing, administrative and other expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (181,299 | )
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (831 | )
Reorganization costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (1,026 | )
Other income and losses on investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (65 | )
Income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 30,709 |
|  |  |  |  |  |  |  |  |  | Project |  |  |  |  |
|  | Product |  |  | Research |  |  | Consulting |  |  | Consolidated |
Year Ended December 31, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Research services revenues |  | $ | 210,268 |  |  | $ | — |  |  | $ | — |  |  | $ | 210,268 |
Advisory services and events revenues |  |  | 17,512 |  |  |  | 42,422 |  |  |  | 43,524 |  |  |  | 103,458 |
Total segment revenues |  |  | 227,780 |  |  |  | 42,422 |  |  |  | 43,524 |  |  |  | 313,726 |
Segment expenses |  |  | 38,615 |  |  |  | 48,277 |  |  |  | 23,292 |  |  |  | 110,184 |
Contribution margin (loss) |  |  | 189,165 |  |  |  | (5,855 | ) |  |  | 20,232 |  |  |  | 203,542 |
Selling, marketing, administrative and other expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (179,391 | )
Amortization of intangible assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (891 | )
Reorganization costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  | (4,433 | )
Other income and losses on investments |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 493 |
Income before income taxes |  |  |  |  |  |  |  |  |  |  |  |  |  | $ | 19,320 |
Schedule of Net Long-lived Tangible Assets by Location | Net long-lived tangible assets by location as of December 31, 2017 and 2016 are as follows (in thousands):
|  | 2017 |  |  | 2016 |
United States |  | $ | 23,943 |  |  | $ | 22,150 |
United Kingdom |  |  | 727 |  |  |  | 782 |
Europe (excluding United Kingdom) |  |  | 163 |  |  |  | 259 |
Other |  |  | 416 |  |  |  | 703 |
Total |  | $ | 25,249 |  |  | $ | 23,894 |
Schedule of Revenues by Geographic Destination and as a Percentage of Total Revenues | Revenues by geographic destination and as a percentage of total revenues for the years ended December 31, 2017, 2016, and 2015 are as follows (dollars in thousands):
|  | 2017 |  |  | 2016 |  |  | 2015 |
United States |  | $ | 260,077 |  |  | $ | 252,222 |  |  | $ | 241,025 |
Europe (excluding United Kingdom) |  |  | 28,525 |  |  |  | 27,061 |  |  |  | 24,607 |
United Kingdom |  |  | 13,651 |  |  |  | 14,808 |  |  |  | 16,815 |
Canada |  |  | 14,523 |  |  |  | 13,806 |  |  |  | 14,424 |
Other |  |  | 20,897 |  |  |  | 18,198 |  |  |  | 16,855 |
Total |  | $ | 337,673 |  |  | $ | 326,095 |  |  | $ | 313,726 |
|  | 2017 |  |  | 2016 |  |  | 2015 |
United States |  |  | 77 | % |  |  | 77 | % |  |  | 77 | %
Europe (excluding United Kingdom) |  |  | 9 |  |  |  | 8 |  |  |  | 8 |
United Kingdom |  |  | 4 |  |  |  | 5 |  |  |  | 5 |
Canada |  |  | 4 |  |  |  | 4 |  |  |  | 5 |
Other |  |  | 6 |  |  |  | 6 |  |  |  | 5 |
Total |  |  | 100 | % |  |  | 100 | % |  |  | 100 | %

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e9038-108599 + Details
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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8813-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8721-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -URI http://asc.fasb.org/extlink&oid=68060357&loc=d3e8736-108599 + Details
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