Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 34,195	$ 62,424
Short-term investments	270,993	367,305
Add: Lease incentive receivable	5,709	0
Prepaid expenses and other current assets	6,248	4,709
Total current assets	317,145	434,438
Operating lease right-of-use assets	86,000	19,376
Property and equipment, net	33,060	27,725
Restricted cash	2,503	999
Deferred rent receivable	769	0
Deposit and other non-current assets	250	29
Total assets	439,727	482,567
Current liabilities:
Accounts payable	1,387	2,810
Accrued expenses and other current liabilities	18,047	13,588
Lease liability, current portion	1,886	4,473
Total current liabilities	21,320	20,871
Long-term liabilities:
Lease liability, net of current portion	101,108	26,235
Other non-current liabilities	1,114	1,114
Total liabilities	123,542	48,220
Commitments and contingencies (Note 7)
Stockholders’ equity:
Preferred stock, $0.0001 par value, 5,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.0001 par value, 300,000 shares authorized at December 31, 2021: 98,381 and 97,549 shares issued and outstanding at December 31, 2021 and 2020, respectively	10	10
Additional paid-in capital	964,965	937,134
Accumulated other comprehensive loss	(714)	(261)
Accumulated deficit	(648,076)	(502,536)
Total stockholders’ equity	316,185	434,347
Total liabilities and stockholders’ equity	$ 439,727	$ 482,567

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).