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Acquisitions - Narrative (Detail) - USD ($) $ in Thousands |  |  |  |  |  |  |  |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Dec. 07, 2018 | Oct. 01, 2018 | Aug. 31, 2018 | Apr. 30, 2018 | Nov. 29, 2017 | Aug. 02, 2017 | May 30, 2017 | May 31, 2016 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | $ 753,718 | $ 657,987 | $ 650,237
Goodwill acquired |  |  |  |  |  |  |  |  |  | 7,750 |
SceneDoc. Inc |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total purchase price to acquire business | $ 6,200 |  |  |  |  |  |  |  |  |  |
Cash to acquire business | 5,400 |  |  |  |  |  |  |  |  |  |
Accrued purchase price | $ 759 |  |  |  |  |  |  |  |  |  |
TradeMaster Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total purchase price to acquire business |  | $ 5,300 |  |  |  |  |  |  |  |  |
CaseloadPRO, LP |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash to acquire business |  |  | $ 9,300 |  |  |  |  |  |  |  |
Socrata, Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash to acquire business |  |  |  | $ 147,600 |  |  |  |  |  |  |
Net cash acquired |  |  |  | 1,724 |  |  |  |  |  |  |
Tangible assets acquired |  |  |  | 7,500 |  |  |  |  |  |  |
Liabilities assumed |  |  |  | 8,800 |  |  |  |  |  |  |
Goodwill |  |  |  | 75,657 |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  | 75,657 |  |
Goodwill, purchase accounting adjustments |  |  |  |  |  |  |  |  | 3,300 |  |
Identifiable intangible assets |  |  |  | 75,000 |  |  |  |  |  |  |
Deferred tax assets, net |  |  |  | $ 20 |  |  |  |  |  |  |
Acquisition related fees |  |  |  |  |  |  |  |  | 578 |  |
Revenue, actual |  |  |  |  |  |  |  |  | 13,900 |  |
Loss, actual |  |  |  |  |  |  |  |  | 11,500 |  |
Socrata, Inc. | Customer relationships, acquired software, and trade name |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Weighted average useful life (in years) |  |  |  | 14 years |  |  |  |  |  |  |
Sage Data Security, LLC |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total purchase price to acquire business |  |  |  | $ 11,600 |  |  |  |  |  |  |
Tangible assets acquired |  |  |  | 1,800 |  |  |  |  |  |  |
Liabilities assumed |  |  |  | 730 |  |  |  |  |  |  |
Goodwill |  |  |  | 3,500 |  |  |  |  |  |  |
Identifiable intangible assets |  |  |  | $ 7,000 |  |  |  |  |  |  |
Weighted average useful life (in years) |  |  |  | 14 years |  |  |  |  |  |  |
Radio 1033, LLC |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash to acquire business |  |  |  |  | $ 1,400 |  |  |  |  |  |
Digital Health Department, Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash to acquire business |  |  |  |  |  | $ 3,900 |  |  |  |  |
Modria.com |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Cash to acquire business |  |  |  |  |  |  | $ 6,100 |  |  |  |
Accrued purchase price |  |  |  |  |  |  |  |  |  | 900 |
Net cash acquired |  |  |  |  |  |  | $ 7,000 |  |  |  |
ExecuTime Software, LLC |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Total purchase price to acquire business |  |  |  |  |  |  |  | $ 7,400 |  |  |
Enterprise Software |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  |  |  |  |  |  |  | 747,161 | 651,430 | $ 643,680
Goodwill acquired |  |  |  |  |  |  |  |  |  | $ 7,750 |
Enterprise Software | Socrata, Inc. |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |
Goodwill acquired |  |  |  |  |  |  |  |  | $ 75,657 |  |

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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472 + Details
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