CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Current assets:
Cash and cash equivalents	$ 5,073	$ 5,061
Restricted cash, short-term	544	0
Prepaid expenses and other current assets	1,107	1,854
Total current assets	6,724	6,915
Property and equipment, net	46	62
Restricted cash, long-term	0	544
Operating lease right-of-use asset	1,206	1,890
Other assets	2,012	1,573
Goodwill	8,982	8,982
Total assets	18,970	19,966
Current liabilities:
Accounts payable	5,388	5,612
Accrued liabilities	7,243	7,274
Current portion of operating lease liability	1,044	1,190
Total current liabilities	13,675	14,076
Long-term operating lease liability	0	428
Warrant liability	600	0
Total liabilities	14,275	14,504
Stockholders’ equity:
Preferred stock, $0.01 par value—5,000,000 shares authorized, no shares issued and outstanding at June 30, 2026 and December 31, 2025	0	0
Common stock, $0.01 par value—567,514,300 shares authorized, 1,949,041 shares issued and outstanding at June 30, 2026; 68,343,750 shares authorized, 646,537 shares issued and outstanding at December 31, 2025	19	6
Additional paid-in capital	1,284,837	1,252,837
Accumulated deficit	(1,280,161)	(1,247,381)
Total stockholders’ equity	4,695	5,462
Total liabilities and stockholders’ equity	$ 18,970	$ 19,966

Warrant Liability, Noncurrent

No definition available.

Name:	cris_WarrantLiabilityNoncurrent
Namespace Prefix:	cris_
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).