Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 105,366	$ 68,431
Short-term investments	11,716	117,158
Prepaid expenses and other current assets	7,514	5,006
Total current assets	124,596	190,595
Operating lease right-of-use assets	52,757	78,934
Property and equipment, net	15,497	34,927
Restricted cash	2,650	2,503
Deposit and other long-term assets	1,270	1,413
Total assets	196,770	308,372
Current liabilities:
Accounts payable	2,170	2,238
Accrued expenses and other current liabilities	16,362	16,767
Lease liability, current portion	10,324	13,241
Total current liabilities	28,856	32,246
Lease liability, net of current portion	65,200	93,561
Other non-current liabilities	0	1,047
Total liabilities	94,056	126,854
Stockholders’ equity:
Preferred stock	0	0
Common stock	10	10
Additional paid-in capital	999,319	985,651
Accumulated other comprehensive loss	(552)	(1,531)
Accumulated deficit	(896,063)	(802,612)
Total stockholders’ equity	102,714	181,518
Total liabilities and stockholders’ equity	$ 196,770	$ 308,372

Accrued expenses and other current liabilities.

No definition available.

Name:	advm_AccruedExpensesAndOtherCurrentLiabilities
Namespace Prefix:	advm_
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).