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v3.20.2

Fair Value Measurements - Reconciliation of Level 3 Instruments (Detail) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2020 | Jun. 30, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Conversion of convertible senior notes | [1] |  | $ (9,473) |
Redeemable Preferred Stock | Level 3 | Fair Value Measurements, Recurring |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning Balance |  |  |  | $ 5,247
Change in fair value |  |  |  | (2,083)
Ending Balance |  | $ 3,164 | 3,164 | 3,164
3.25% convertible senior notes due 2023 |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Conversion of convertible senior notes |  | (9,500) |  |
3.25% convertible senior notes due 2023 | Level 3 | Fair Value Measurements, Recurring |  |  |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |
Beginning Balance |  |  |  | 50,753
Conversion of convertible senior notes |  |  |  | (9,473)
Change in fair value |  |  |  | 52
Payment-in-kind interest |  |  |  | 925
Ending Balance |  | $ 42,257 | $ 42,257 | $ 42,257
[1] | After giving effect to a 1 for 10 reverse stock split effective July 9, 2020.

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- Definition Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Amount of purchases, (sales), issuances and (settlements) of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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