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Condensed Consolidated Statements of Cash Flows - USD ($)
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Cash Flows From Operating Activities:      
Net loss $ (275,528,000) $ (32,693,000) $ (18,332,000)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:      
Loss on extinguishment of debt 251,754,000 0 0
Depreciation and amortization 20,247,000 9,869,000 2,415,000
Amortization of debt discount 1,236,000 437,000 288,000
Interest expense on convertible note settled by issuance of common stock   0 418,000
Unrealized (gain) loss on investments in equity securities 1,386,000 (845,000) 102,000
Realized loss on investments in equity securities   1,090,000 0
Unrealized (gain) loss on investments in equity securities 81,000 32,000 (82,000)
Stock-based compensation expense 15,345,000 8,916,000 6,962,000
Accelerated stock-based compensation expense   0 9,562,000
Loss on disposal of property and equipment 542,000 384,000 274,000
Provision for bad debt 26,000 197,000 42,000
Changes in operating assets and liabilities, net of effects of acquisition:      
Accounts receivable (7,270,000) (2,617,000) (3,596,000)
Inventories (5,979,000) 1,322,000 (253,000)
Prepaid expenses and other current assets 3,056,000 (7,520,000) (345,000)
Deposits 211,000 (152,000) (86,000)
Change in operating lease right-of-use assets and lease liabilities 562,000 134,000 (6,000)
Accounts payable and other accrued expenses (398,000) 4,245,000 570,000
Accrued compensation and related expenses 2,522,000 3,143,000 641,000
Deferred revenue 102,000 (309,000) 81,000
Net deferred tax (asset) liability 231,000 (499,000) 21,000
Net cash provided by (used in) operating activities 8,126,000 (14,866,000) (1,324,000)
Cash Flows From Investing Activities:      
Purchases of property and equipment (23,882,000) (8,918,000) (5,336,000)
Software development costs (870,000) (551,000) 0
Purchases of short-term investments (482,707,000) (158,736,000) (43,196,000)
Sales/maturities of short-term investments 44,000,000 149,233,000 5,995,000
Patent and trademark costs (255,000) (200,000) (73,000)
Cash paid for acquisitions (5,540,000) (363,140,000) (20,317,000)
Net cash used in investing activities (469,254,000) (382,312,000) (62,927,000)
Cash Flows From Financing Activities:      
Proceeds from exercise of stock options and warrants 8,995,000 9,388,000 5,363,000
Proceeds from the issuance of convertible senior notes 40,068,000 115,000,000 0
Proceeds from issuance of common stock, net of issuance costs   28,160,000 0
Proceeds from issuance of Series C convertible preferred stock, net of issuance costs 248,911,000 237,225,000 0
Payment of deferred financing costs   (4,118,000) 0
Repayment of finance lease liabilities (60,000) (70,000) (23,000)
Repayment of note payable (3,397,000) 0 0
Proceeds from tender offer, net of offering costs 269,825,000 0 68,811,000
Net cash provided by financing activities 564,342,000 385,585,000 74,151,000
Effect of exchange rate changes on cash and cash equivalents (986,000) 1,231,000 8,000
Net change in cash and cash equivalents 102,228,000 (10,362,000) 9,908,000
Cash and cash equivalents - beginning of year 36,873,000 47,235,000 37,327,000
Cash and cash equivalents - end of year 139,101,000 36,873,000 47,235,000
Supplemental Disclosure of Cash Flow Information:      
Cash paid for interest 3,297,000 1,823,000 707,000
Cash paid for income taxes 1,315,000 60,000 14,000
Supplemental Disclosure of Non-Cash Investing and Financing Activities:      
Net unrealized gain (loss) on available-for-sale debt securities 3,958,000 161,000 (28,000)
Reclassification of realized gain on available-for-sale debt securities to earnings 27,000 3,000 23,000
Purchase of equipment through finance lease obligations   205,000 0
Fixed assets included in accounts payable and accrued liabilities 1,412,000 499,000 261,000
Paid-in-kind preferred stock dividend, including beneficial conversion feature 8,196,000 2,844,000 0
Common stock issued for conversion of debt and accrued interest $ 765,000 $ 0 $ 15,418,000