Goodwill and Other Intangible Assets	3 Months Ended
Mar. 31, 2026
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Goodwill and intangible assets deemed to have indefinite lives are not amortized but are evaluated for impairment. First Guaranty performs impairment testing when events or changes in circumstances indicate it is more likely than not that the carrying amount may not be recoverable. As a result of prior impairment testing, no goodwill remains on the balance sheet. During 2025, First Guaranty performed a quantitative impairment test as of September 30, 2025, using a combination of market and income approaches, including the guideline public company method, guideline precedent transaction method, and discounted cash flow analysis. The test was triggered by First Guaranty's stock price trading below book value and the recent increase in credit provisions. Based on the results of the test, First Guaranty concluded the goodwill of $12.9 million was impaired and recorded a one-time non-cash impairment charge during 2025. No goodwill impairment charges were recorded in periods prior to 2025. Other intangible assets continue to be amortized over their useful lives. Loan servicing assets totaled $0.2 million at March 31, 2026 and $0.3 million at December 31, 2025. Other intangible assets recorded include core deposit intangibles, which are subject to amortization. The weighted-average amortization period remaining for First Guaranty's core deposit intangibles is 3.0 years at March 31, 2026. The core deposits intangible reflect the value of deposit relationships, including the beneficial rates, which arose from acquisitions.

Goodwill and intangible assets deemed to have indefinite lives are not amortized but are evaluated for impairment. First Guaranty performs impairment testing when events or changes in circumstances indicate it is more likely than not that the carrying amount may not be recoverable. As a result of prior impairment testing, no goodwill remains on the balance sheet.

During 2025, First Guaranty performed a quantitative impairment test as of September 30, 2025, using a combination of market and income approaches, including the guideline public company method, guideline precedent transaction method, and discounted cash flow analysis. The test was triggered by First Guaranty's stock price trading below book value and the recent increase in credit provisions. Based on the results of the test, First Guaranty concluded the goodwill of $12.9 million was impaired and recorded a one-time non-cash impairment charge during 2025. No goodwill impairment charges were recorded in periods prior to 2025.

Other intangible assets continue to be amortized over their useful lives. Loan servicing assets totaled $0.2 million at March 31, 2026 and $0.3 million at December 31, 2025. Other intangible assets recorded include core deposit intangibles, which are subject to amortization. The weighted-average amortization period remaining for First Guaranty's core deposit intangibles is 3.0 years at March 31, 2026. The core deposits intangible reflect the value of deposit relationships, including the beneficial rates, which arose from acquisitions.