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Organization and Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Nov. 30, 2018 | Jun. 30, 2017
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Sales returns coverage period | 30 days |  |  |
Unbilled accounts receivable | $ 6.9 |  |  |
Noncurrent deferred revenue | $ 3.6 | $ 2.1 |  |
Amortization period for incentive compensation costs | 1 year |  |  |
Minimum |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Contract payment term | 30 days |  |  |
Maximum |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Contract payment term | 90 days |  |  |
0.75% Senior Convertible Notes due 2022 | Senior Notes |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Interest rate on convertible notes (as a percent) |  |  |  | 0.75%
0.75% Senior Convertible Notes due 2023 | Senior Notes |  |  |  |
Organization And Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Interest rate on convertible notes (as a percent) |  |  | 0.75% |

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130532-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=118944033&loc=SL49130531-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130549-203045 + Details
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