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Basis of Presentation and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2020
Accounting Policies [Abstract] |
Schedule of Disaggregated Revenue by Payor Type | The following table presents disaggregated revenue generated by each payor type (in thousands):
| Years Ended December 31,
| 2020 |  | 2019 |  | 2018
Commercial | $ | 108,851 |  |  | $ | 107,340 |  |  | $ | 113,000 |
Medicare | 271,596 |  | 226,002 |  | 226,353
Medicaid | 269,079 |  | 192,596 |  | 134,904
Other third parties | 37,654 |  | 34,680 |  | 45,651
Revenue | $ | 687,180 |  |  | $ | 560,618 |  |  | $ | 519,908 |
Schedule of Contributions to Revenue and Receivables by Payor | The Company had major payors that contributed the following percentages of net revenue:
| Years Ended December 31,
| 2020 |  | 2019 |  | 2018
Payor A | 12.5 | % |  | 13.6 | % |  | 14.6 | %
Payor B | 10.9 | % |  | 13.4 | % |  | 18.7 | %
Payor C | *% |  | *% |  | 14.1 | %
Payor D | 13.1 | % |  | 11.7 | % |  | 14.1 | %
Payor E | 16.9 | % |  | 12.9 | % |  | *%
*Less than 10% of total net revenues The Company had major payors that contributed to the following percentages of net receivables and receivables - related parties :
|  | As of December 31,
|  | 2020 |  | 2019
Payor F |  | 43.9 | % |  | 30.4 | %
Payor G |  | 36.5 | % |  | 36.0 | %
Schedule of Carrying Amounts and Fair Values of Financial Instruments | The carrying amounts and fair values of the Company’s financial instruments as of December 31, 2020 are presented below (in thousands):
|  | Fair Value Measurements |  |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets |  |  |  |  |  |  |  |
Money market accounts* |  | $ | 115,769 |  |  | $ | — |  |  | $ | — |  |  | $ | 115,769 |
Marketable securities – certificates of deposit |  | 67,637 |  |  | — |  |  | — |  |  | 67,637 |
Marketable securities – equity securities |  | 58 |  |  | — |  |  | — |  |  | 58 |
Total |  | $ | 183,464 |  |  | $ | — |  |  | $ | — |  |  | $ | 183,464 |
The carrying amounts and fair values of the Company’s financial instruments as of December 31, 2019 are presented below (in thousands):
|  | Fair Value Measurements |  |
|  | Level 1 |  | Level 2 |  | Level 3 |  | Total
Assets |  |  |  |  |  |  |  |
Money market accounts* |  | $ | 50,731 |  |  | $ | — |  |  | $ | — |  |  | $ | 50,731 |
Marketable securities – certificates of deposit |  | 116,469 |  |  | — |  |  | — |  |  | 116,469 |
Marketable securities – equity securities |  | 70 |  |  | — |  |  | — |  |  | 70 |
Total |  | $ | 167,270 |  |  | $ | — |  |  | $ | — |  |  | $ | 167,270 |
*Included in cash and cash equivalents

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + 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 (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19279-110258 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=117815213&loc=SL7498348-110258 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -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 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the extent of the entity's reliance on its major customers, if revenues from transactions with a single external customer amount to 10 percent or more of entity revenues, including the disclosure of that fact, the total amount of revenues from each such customer, and the identity of the reportable segment or segments reporting the revenues. The entity need not disclose the identity of a major customer or the amount of revenues that each segment reports from that customer. For these purposes, a group of companies known to the entity to be under common control is considered a single customer, and the federal government, a state government, a local government such as a county or municipality, or a foreign government is each considered a single customer. + References No definition available. + Details
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