Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 66,229	$ 71,878
Prepaid expenses and other current assets	1,334	3,334
Assets held for sale	0	520
Total current assets	67,563	75,732
Property and equipment, net	0	166
Operating lease right-of-use asset	436	749
Total assets	67,999	76,647
Current liabilities:
Accounts payable	273	507
Accrued and other current liabilities	1,135	3,741
Operating lease liabilities, current	1,354	2,326
Total current liabilities	2,762	6,574
Total liabilities	2,762	6,574
Stockholders' equity:
Common stock, $0.001 par value, 250,000,000 shares authorized as of March 31, 2026 (unaudited) and December 31, 2025; 7,374,375 and 7,331,739 shares issued and outstanding as of March 31, 2026 (unaudited) and December 31, 2025, respectively	7	7
Preferred stock, $0.001 par value, 10,000,000 shares authorized; zero shares issued and outstanding as of March 31, 2026 (unaudited) and December 31, 2025	0	0
Additional paid-in capital	561,518	560,598
Accumulated other comprehensive income (loss)	0	0
Accumulated deficit	(496,288)	(490,532)
Total stockholders' equity	65,237	70,073
Total liabilities and stockholders' equity	$ 67,999	$ 76,647

Accrued liabilities and other liabilities, current.

No definition available.

Name:	kzr_AccruedLiabilitiesAndOtherLiabilitiesCurrent
Namespace Prefix:	kzr_
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).