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Deferred Revenue and Performance Obligations (Tables) | 12 Months Ended
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Dec. 31, 2019
Revenue from Contract with Customer [Abstract] |
Changes in deferred revenue | Total deferred revenue, including long-term, by segment is as follows:
|  | December 31, 2019 |  | December 31, 2018
Enterprise Software |  | $ | 386,115 |  |  | $ | 327,521 |
Appraisal and Tax |  | 25,210 |  |  | 20,018 |
Corporate |  | 1,369 |  |  | 3,397 |
Totals |  | $ | 412,694 |  |  | $ | 350,936 |
Changes in total deferred revenue, including long-term, were as follows:
|  | 2019
Balance at beginning of year |  | $ | 350,936 |
Deferral of revenue |  | 993,109 |
Recognition of deferred revenue |  | (931,351 | )
Balance at end of year |  | $ | 412,694 |

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- Definition Tabular disclosure of contract balances and changes in contract balances. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045 + Details
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