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v3.20.4

Revision of Prior Period Financial Statements - Schedule of Revised Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Cash flows from operating activities |  |  |
Net loss | $ (43,830) | $ (54,568) | $ (50,378)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Provision for bad debt and contractual allowances |  |  | 16,448
Accounts receivable | 37,957 | 28,725 | 21,747
Accrued liabilities | 1,308 | 6,002 | 10,501
Deferred revenue | (321) | 28 | (15)
Net cash used in operating activities | (13,759) | (21,863) | (29,093)
Cash flows from investing activities |  |  |
Purchases of available-for-sale investments | 277,510 | 165,915 | 93,133
Net cash provided by investing activities | $ (132,391) | $ (89,274) | 34,142
As Reported |  |  |
Cash flows from operating activities |  |  |
Net loss |  |  | (48,280)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Provision for bad debt and contractual allowances |  |  | 15,218
Accounts receivable |  |  | 22,885
Accrued liabilities |  |  | 10,776
Deferred revenue |  |  | 5
Net cash used in operating activities |  |  | (29,068)
Cash flows from investing activities |  |  |
Purchases of available-for-sale investments |  |  | 93,158
Net cash provided by investing activities |  |  | 34,117
Adjustment |  |  |
Cash flows from operating activities |  |  |
Net loss |  |  | (2,098)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Provision for bad debt and contractual allowances |  |  | 1,230
Accounts receivable |  |  | (1,138)
Accrued liabilities |  |  | (275)
Deferred revenue |  |  | (20)
Net cash used in operating activities |  |  | (25)
Cash flows from investing activities |  |  |
Purchases of available-for-sale investments |  |  | (25)
Net cash provided by investing activities |  |  | $ 25

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