Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 35,260	$ 139,480
Marketable securities	293,700	294,606
Prepaid expenses and other current assets	5,369	4,387
Total current assets	334,329	438,473
Operating lease right-of-use assets	1,419	1,314
Other assets and long-term deposits	16,705	11,192
Total assets	352,453	450,979
Current liabilities:
Accounts payable	3,474	4,460
Operating lease liabilities, current	1,168	1,172
Other current liabilities (Note 6)	37,013	36,126
Total current liabilities	41,655	41,758
Operating lease liabilities, net of current portion	310	257
Long-term borrowing	3,000	0
Total liabilities	44,965	42,015
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized as of September 30, 2025 and December 31, 2024; no shares issued and outstanding as of September 30, 2025 and December 31, 2024.
Common stock, $0.0001 par value; 490,000,000 shares authorized as of September 30, 2025 and December 31, 2024; 68,652,730 and 74,312,608 shares issued and outstanding as of September 30, 2025 and December 31, 2024, respectively.	7	7
Additional paid-in capital	858,451	843,920
Accumulated other comprehensive income	526	143
Accumulated deficit	(551,496)	(435,106)
Total stockholders' equity	307,488	408,964
Total liabilities and stockholders' equity	$ 352,453	$ 450,979

Other assets and long term deposits, non Current.

No definition available.

Name:	olma_OtherAssetsAndLongTermDepositsNonCurrent
Namespace Prefix:	olma_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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).