Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026
Current assets:
Cash and cash equivalents	$ 797,798	$ 902,110
Accounts receivable	697	1,133
Prepaid expenses and other current assets	52,683	45,576
Total current assets	851,178	948,819
Property and equipment, net	351	443
Other assets	961	7,752
Total assets	852,490	957,014
Current liabilities:
Accounts payable	10,138	7,541
Accrued expenses and other current liabilities	106,964	96,881
Total current liabilities	117,102	104,422
Total liabilities	117,102	104,422
Commitments and contingencies (Note 10)
Stockholders’ equity:
Common stock, par value $0.0001 per share, 500,000,000 shares authorized, 206,264,878 shares issued and outstanding at June 30, 2026 and 500,000,000 shares authorized, 203,940,353 shares issued and outstanding at March 31, 2026	20	20
Additional paid-in capital	2,632,996	2,596,971
Accumulated other comprehensive income	725	730
Accumulated deficit	(1,898,353)	(1,745,129)
Total stockholders’ equity	735,388	852,592
Total liabilities and stockholders’ equity	852,490	957,014
Series A preferred stock
Stockholders’ equity:
Preferred stock	0	0
Preferred Stock
Stockholders’ equity:
Preferred stock	$ 0	$ 0

Accrued Liabilities And Other Liabilities, Current

No definition available.

Name:	imvt_AccruedLiabilitiesAndOtherLiabilitiesCurrent
Namespace Prefix:	imvt_
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).