Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Cash flows from operating activities:
Net loss	$ (13,722)	$ (20,781)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation expense	1,605	2,022
Non-cash operating lease expense	58	39
Accretion of discounts on marketable securities, net	(305)	(669)
Depreciation and amortization expense	38	0
Unrealized foreign currency transaction loss	21	24
Changes in operating assets and liabilities:
Prepaid expenses and other current assets	929	1,893
Other long-term assets	0	(10)
Accounts payable	(1,409)	72
Accrued expenses and other current liabilities	(1,532)	2,035
Operating lease liabilities	(62)	(59)
Net cash used in operating activities	(14,379)	(15,434)
Cash flow from investing activities:
Purchases of marketable securities	(44,855)	(58,751)
Proceeds from maturities of marketable securities	31,900	16,000
Net cash used in investing activities	(12,955)	(42,751)
Cash flows from financing activities
Proceeds from exercise of stock options	5	0
Net cash provided by financing activities	5	0
Effect of exchange rate changes on cash and cash equivalents	0	(24)
Net change in cash and cash equivalents	(27,329)	(58,209)
Cash and cash equivalents at beginning of period	35,685	87,229
Cash and cash equivalents at end of period	8,356	29,020
Supplemental disclosure of cash flow information:
Cash paid for leases included in operating cash outflows	$ 73	$ 69

Cash paid for leases included in operating cash outflows

No definition available.

Name:	clym_CashPaidForLeasesIncludedInOperatingCashOutflows
Namespace Prefix:	clym_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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.