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Fair Value (Tables) | 12 Months Ended
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Dec. 31, 2020
Fair Value Disclosures [Abstract] |
Schedule of Fair Value Assets Measured on Recurring Basis | The following sets forth the fair value, and classification within the hierarchy, of the Company’s assets required to be measured at fair value on a recurring basis as of December 31, 2020 (in thousands):
|  | Fair Value |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds - equity securities (1) |  | $ | 3,849 |  |  | $ | 3,849 |  |  | $ | — |  |  | $ | — |
Corporate bonds and notes - debt securities (2) |  |  | 69,960 |  |  |  | — |  |  |  | 69,960 |  |  |  | — |
Treasury and agency notes and bills - debt securities (3) |  |  | 32,299 |  |  |  | — |  |  |  | 32,299 |  |  |  | — |
Commercial paper - debt securities (3) |  |  | 15,987 |  |  |  | — |  |  |  | 15,987 |  |  |  | — |
Total Assets |  | $ | 122,095 |  |  | $ | 3,849 |  |  | $ | 118,246 |  |  | $ | — |
(1) Reported as cash and cash equivalents in the Consolidated Balance Sheet. (2) Reported as AFS debt securities in the Consolidated Balance Sheet. (3) Reported as cash and cash equivalents if purchased with an original maturity of three months or less at the date of purchase; otherwise reported as AFS debt securities in the Consolidated Balance Sheet. The following sets forth the fair value, and classification within the hierarchy, of the Company’s assets required to be measured at fair value on a recurring basis as of December 31, 201 9 (in thousands):
|  | Fair Value |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Marketable securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Money market funds - equity securities (1) |  | $ | 2,601 |  |  | $ | 2,601 |  |  | $ | — |  |  | $ | — |
Marketable equity securities (2) |  |  | 1,124 |  |  |  | 1,124 |  |  |  | — |  |  |  | — |
Corporate bonds and notes - debt securities (3) |  |  | 41,746 |  |  |  | — |  |  |  | 41,746 |  |  |  | — |
Commercial paper - debt securities (3) |  |  | 4,056 |  |  |  | — |  |  |  | 4,056 |  |  |  | — |
Total Assets |  | $ | 49,527 |  |  | $ | 3,725 |  |  | $ | 45,802 |  |  | $ | — |
(1) Reported as cash and cash equivalents in the Consolidated Balance Sheet. (2) Reported as equity securities in the Consolidated Balance Sheet. (3) Reported as AFS debt securities in the Consolidated Balance Sheet.
Schedule of Carrying Amounts and Estimated Fair Values | The carrying amounts and estimated fair values are as follows (in thousands):
|  | December 31, 2020 |  |  | December 31, 2019 |
|  | Carrying Amount |  |  | Estimated Fair Value |  |  | Carrying Amount |  |  | Estimated Fair Value |
2020 Term B Loan Facility (1) |  | $ | 839,302 |  |  | $ | 842,579 |  |  | $ | — |  |  | $ | — |
2021 Convertible Notes |  |  | 48 |  |  |  | 48 |  |  |  | — |  |  |  | — |
2018 Amended Term B Loan (1) |  |  | — |  |  |  | — |  |  |  | 334,679 |  |  |  | 335,642 |
Total long-term debt, net |  | $ | 839,350 |  |  | $ | 842,627 |  |  | $ | 334,679 |  |  | $ | 335,642 |
(1) Carrying amounts of long-term debt are net of unamortized debt discount and issuance costs of $34.4 million and $9.3 million as of December 31, 2020 and 2019, respectively. See “Note 11 – Debt” for additional information.

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- Definition Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements. + References No definition available. + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (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 (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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