Amount of non-cash operating lease expenses.

No definition available.

Name:	sgmt_NonCashOperatingLeaseExpenses
Namespace Prefix:	sgmt_
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.

Condensed Statements of Cash Flows - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
Condensed Statements of Cash Flows - USD ($)	Jun. 30, 2025	Mar. 31, 2025	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023
Cash flows from operating activities
Net loss	$ (10,386,000)	$ (18,176,000)	$ (8,118,000)	$ (6,629,000)	$ (28,562,000)	$ (14,747,000)
Adjustments to reconcile net loss to net cash used in operating activities:
Accretion of discount on marketable securities					(761,000)	(670,000)
Non-cash operating lease expense					77,000	71,000
Stock-based compensation expense					3,070,000	2,208,000
Changes in operating assets and liabilities:
Prepaid expenses and other current assets					(722,000)	1,048,000
Accounts payable, accrued expenses and other current liabilities					3,339,000	309,000
Operating lease liabilities					(78,000)	(61,000)
Net cash used in operating activities					(23,637,000)	(11,842,000)
Cash flows from investing activities
Purchases of marketable securities					(58,528,000)	(82,952,000)
Sales and maturities of marketable securities					48,651,000	10,795,000
Net cash provided by investing activities					(9,877,000)	(72,157,000)
Cash flows from financing activities
Proceeds from sale of Series A common stock, net of issuance costs					0	105,750,000
Payment of financing costs					0	(1,045,000)
Proceeds from exercise of stock options					1,000	114,000
Net cash provided by financing activities					1,000	104,819,000
Net (decrease) increase in cash and cash equivalents							$ (33,513,000)	$ 20,820,000
Cash and cash equivalents at beginning of period		$ 75,840,000		$ 75,139,000	75,840,000	75,139,000	75,139,000
Cash and cash equivalents at end of period	$ 42,327,000		$ 95,959,000		42,327,000	95,959,000	$ 75,840,000	$ 75,139,000
Supplemental non-cash investing and financing activities:
Right-of-use assets obtained in exchange for operating lease obligations					$ 152,000	$ 149,000