Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net income (loss)	$ 6,804	$ (1,547)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	931	384
Amortization of deferred financing costs	142	69
Loss on extinguishment of debt	648
Share based compensation expense	1,959	329
Amortization of fair value of warrants issued with debt		12
Provision for doubtful accounts	15
Loss on change in fair value of warrant liabilities	3,317	562
Changes in:
Accounts receivable	(9,550)	(5,711)
Inventories	(3,242)	(2,042)
Prepaid expenses and other assets	(2,945)	(295)
Accounts payable	984	1,010
Payroll-related accruals, accrued liabilities and other liabilities	4,473	3,119
Net cash provided by (used in) operating activities	3,536	(4,110)
Cash flows from investing activities
Purchase of property and equipment	(3,076)	(2,062)
Net cash used in investing activities	(3,076)	(2,062)
Cash flows from financing activities
Proceeds from issuance of common stock upon initial public offering, net of issuance costs paid	164,361
Proceeds from notes payable	10,000
Repayments of notes payable	(30,250)
Debt financing costs	(452)
Proceeds from subscriptions receivable		107
Proceeds from exercise of stock options	226	91
Proceeds from warrants exercises	4
Net cash provided by financing activities	143,889	198
Net increase (decrease) in cash	144,349	(5,974)
Cash, cash equivalents and restricted cash beginning of period	24,027	21,884
Cash, cash equivalents and restricted cash end of period	168,376	15,910
Supplemental disclosures of cash flow information:
Cash paid for income taxes	82	11
Cash paid for interest	966	$ 605
Noncash investing and financing:
Common stock issued on conversion of convertible preferred stock	54,170
Common stock warrants issued on conversion of preferred stock warrants and the reclassification of the warrant liability	4,486
Deferred initial public offering cost recorded to additional paid in capital	$ 1,382