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Summary of Significant Accounting Policies - Impacts of the Collectability Reserves (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Summary of Significant Accounting Policies
Rental revenue	$ 1,461	$ 288	$ (3,305)
Provision for (recovery of) doubtful accounts	2,363	459	1,412
Total (income) expense impact	$ 3,824	$ 747	$ (1,893)

X

- Definition

Amount of provision for (recovery of) doubtful accounts.

+ References

No definition available.

+ Details

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X

- Definition

Amount of operating lease provision for uncollectible lease income.

+ References

No definition available.

+ Details

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Namespace Prefix:	seg_
Data Type:	xbrli:monetaryItemType
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X

- Definition

Total amount of operating lease provision for uncollectible lease income and amount of provision for (recovery of) doubtful accounts.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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