Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	5 Months Ended	6 Months Ended
Jun. 30, 2024	Jun. 30, 2025
Cash flows from operating activities:
Net loss	$ (29,320)	$ (45,573)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	768	9,960
Net accretion of premiums and discounts on marketable securities		(3,300)
Non-cash interest expense	3
Non-cash lease expense	4	187
Depreciation expense		35
Changes in operating assets and liabilities:
Subscription receivable	1
Prepaid expenses and other current assets	(1,721)	(765)
Other non-current assets	(43)	(60)
Accounts payable	2,022	1,202
Accrued expenses and other current liabilities	683	232
Operating lease liability	4	(29)
Related party accounts payable and other current liabilities	15,437	(5,903)
Accrued interest payable, related party	961
Net cash used in operating activities	(11,201)	(44,014)
Cash flows from investing activities:
Purchases of property and equipment		(47)
Purchases of marketable securities		(152,289)
Proceeds from maturities of marketable securities		200,062
Net cash provided by investing activities		47,726
Cash flows from financing activities:
Proceeds from issuance of Pre-Merger Oruka Series A Preferred Stock, net of issuance costs paid	2,931
Proceeds from issuance of notes payable to related party, net of issuance costs paid	24,980
Payment of deferred offering costs	(1,589)
Proceeds from issuance of common stock		109
Net cash provided by financing activities	26,322	109
Net increase in cash and cash equivalents	15,121	3,821
Cash and cash equivalents at beginning of period		61,575
Cash and cash equivalents at end of period	15,121	65,396
Supplemental disclosures of non-cash operating and financing activities:
Operating lease liability arising from obtaining operating right-of-use asset	982	1,387
Deferred offering costs in accrued expenses and other current liabilities	$ 726

Amount of deferred offering costs in accrued expenses and other current liabilities.

No definition available.

Name:	orka_DeferredOfferingCostsInAccruedExpensesAndOtherCurrentLiabilities
Namespace Prefix:	orka_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method.