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Business Acquisitions - Additional Information (Details) - USD ($) $ in Thousands |  |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 08, 2016 | Jan. 05, 2016 | Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |  |
Total purchase price, net of cash received |  |  | $ 0 | $ 271,458 |
Goodwill |  |  | $ 328,216 |  | $ 327,724
Aesynt Holding, L.P., Aesynt, Ltd. |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total purchase price, net of cash received |  | $ 271,458 |  |  |
Cash on hand at signing |  | 8,164 |  |  |
Goodwill |  | $ 163,599 |  |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Minimum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
In process research and development, expected term |  |  | 2 years |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Maximum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
In process research and development, expected term |  |  | 3 years |  |
Aesynt Holding, L.P., Aesynt, Ltd. | In-process research and development (IPR&D) |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty rate |  |  | 12.50% |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Trade names |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty rate |  |  | 0.50% |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Developed technology | Minimum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty rate |  |  | 4.00% |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Developed technology | Maximum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty rate |  |  | 8.00% |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Customer relationships |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Discount rate |  |  | 13.00% |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Backlog |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Discount rate |  |  | 10.00% |  |
Aesynt Holding, L.P., Aesynt, Ltd. | Non-compete |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Discount rate |  |  | 13.00% |  |
Ateb |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Total purchase price, net of cash received | $ 40,700 |  |  |  |
Cash on hand at signing | 902 |  |  |  |
Goodwill | $ 20,832 |  |  |  |
Ateb | Trade names |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty rate |  |  |  |  | 0.50%
Ateb | Developed technology | Minimum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty rate |  |  |  |  | 5.00%
Ateb | Developed technology | Maximum |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Royalty rate |  |  |  |  | 6.00%
Ateb | Customer relationships |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Discount rate |  |  |  |  | 15.00%

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472 + Details
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