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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | $ 443,285 | $ 351,594 | $ 297,891
Subscription and support |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 379,340 | 295,877 | 245,765
XBRL professional services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 44,763 | 38,032 | 38,734
Other services |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 19,182 | 17,685 | 13,392
Information technology |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 47,697 | 34,878 | 30,798
Diversified financials |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 57,470 | 44,326 | 34,614
Consumer discretionary |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 41,826 | 34,029 | 29,147
Industrials |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 59,797 | 46,764 | 39,210
Healthcare |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 39,394 | 30,676 | 24,764
Banks |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 46,702 | 39,630 | 33,573
Insurance |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 27,206 | 21,993 | 18,047
Energy |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 21,093 | 18,380 | 18,113
Real estate |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 21,042 | 18,070 | 16,572
Utilities |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 21,319 | 13,561 | 12,231
Materials |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 19,357 | 16,321 | 14,761
Public administration |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 13,719 | 11,433 | 6,974
Consumer staples |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | 13,146 | 10,683 | 9,570
Other |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Total revenue | $ 13,517 | $ 10,850 | $ 9,517

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8906-108599 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9031-108599 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8933-108599 Reference 5: 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=123359005&loc=d3e8933-108599 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130543-203045 Reference 7: 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=123359005&loc=d3e8736-108599 Reference 8: 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=123359005&loc=d3e8736-108599 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9054-108599 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130545-203045 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 + Details
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