Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 52,547	$ 48,301
Marketable securities	452,800	457,136
Prepaid expenses and other current assets	7,882	10,015
Total current assets	513,229	515,452
Operating lease right-of-use assets	921	1,146
Other assets and long-term deposits	16,495	16,832
Total assets	530,645	533,430
Current liabilities:
Accounts payable	3,719	9,253
Current portion of operating lease liability	956	1,124
Other current liabilities	42,492	41,425
Total current liabilities	47,167	51,802
Non-current liabilities:
Operating lease liabilities, net of current portion	0	69
Long-term borrowing	3,000	3,000
Total liabilities	50,167	54,871
Commitments and contingencies (Note 10)
Stockholders' equity:
Preferred stock, $0.0001 par value; 10,000,000 shares authorized as of March 31, 2026 and December 31, 2025; no shares issued and outstanding as of March 31, 2026 and December 31, 2025.
Common stock, $0.0001 par value; 490,000,000 shares authorized as of March 31, 2026 and December 31, 2025; 87,332,971 and 81,376,449 shares issued and outstanding as of March 31, 2026 and December 31, 2025, respectively.	8	8
Additional paid-in capital	1,131,576	1,075,487
Accumulated other comprehensive (loss) income	(460)	621
Accumulated deficit	(650,646)	(597,557)
Total stockholders' equity	480,478	478,559
Total liabilities and stockholders' equity	$ 530,645	$ 533,430

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).