Net (Loss) Income per Common Share Attributable to Fortitude Shareholders (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Net (Loss) Income per Common Share Attributable to Fortitude Shareholders
Net (loss) income attributable to Fortitude Shareholders	$ (1,630)	$ 1,249
Basic weighted average shares of common stock outstanding	25,832,987	24,173,209
Diluted effect of share-based awards		345,155
Diluted weighted average common shares outstanding	25,832,987	24,518,364
Net (loss) income per share attributable to Fortitude Shareholders:
Net (loss) income per share attributable to Fortitude Shareholders, Basic	$ (0.06)	$ 0.05
Net (loss) income per share attributable to Fortitude Shareholders, Diluted	$ (0.06)	$ 0.05

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details