Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 191,581	$ 35,965
Receivables from collaborative partners	12,195	6,851
Short-term investments	238,536	354,939
Prepaid expenses and other current assets	6,369	9,080
Total current assets	448,681	406,835
Property and equipment, net	1,728	2,098
Operating lease right-of-use assets	14,839	16,174
Long-term investments	27,914	27,026
Other long-term assets	256	256
Total assets	493,418	452,389
Current liabilities:
Accounts payable	3,592	4,698
Accrued expenses	38,401	30,967
Current portion of operating lease liability	1,887	1,777
Total current liabilities	43,880	37,442
Liability related to sale of future royalties	350,564	310,807
Operating lease liability, net of current portion	14,607	16,037
Stockholders’ equity:
Preferred stock, $0.001 par value, 10,000 shares authorized and no shares, issued or outstanding at September 30, 2024 and December 31, 2023, respectively	0	0
Common stock, $0.001 par value, 500,000 shares authorized, 30,429 shares and 26,597 shares issued and outstanding at September 30, 2024 and December 31, 2023, respectively	30	27
Additional paid in capital	821,121	702,969
Accumulated other comprehensive gain (loss)	759	(797)
Accumulated deficit	(737,543)	(614,096)
Total stockholders’ equity	84,367	88,103
Total liabilities and stockholders’ equity	$ 493,418	$ 452,389

Advance Future Royalties, Liability, Noncurrent

No definition available.

Name:	anab_AdvanceFutureRoyaltiesLiabilityNoncurrent
Namespace Prefix:	anab_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).