CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities:
Net loss	$ (55,645)	$ (66,303)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization expense	2,729	2,735
Stock-based compensation	13,012	12,954
Accretion of discount on issued term debt	489	361
Accretion of discount on short-term investments, net	(3,476)	(4,244)
Changes in operating assets and liabilities:
Accounts receivable	(3,416)	(2,818)
Prepaid expenses and other current assets	946	3,207
Operating lease right-of-use assets	1,764	1,679
Accounts payable	(277)	(131)
Accrued expenses and other liabilities	(1,260)	(4,565)
Operating lease liabilities	(1,976)	(1,823)
Deferred revenue	70,425	(12,363)
Net cash provided by (used in) operating activities	23,315	(71,311)
Investing Activities:
Purchases of property and equipment	(1,149)	(1,968)
Purchases of short-term investments	(156,050)	(109,374)
Proceeds from maturities of short-term investments	120,000	150,000
Net cash provided by (used in) investing activities	(37,199)	38,658
Financing Activities:
Proceeds from issuance of common stock under employee stock compensation plans	549	752
Payment of taxes related to net share settlement of equity awards	(592)	(494)
Proceeds from issuance of common stock through ATM offering, net of issuance costs		928
Net cash provided by (used in) financing activities	(43)	1,186
Net decrease in cash and cash equivalents	(13,927)	(31,467)
Cash and cash equivalents at beginning of period	44,472	81,378
Cash and cash equivalents at end of period	30,545	49,911
Non-cash operating, investing and financing activities:
Purchases of property and equipment included in accounts payable and accrued liabilities	284	193
Supplemental disclosure of cash flow information:
Interest paid	$ 4,045	$ 3,775