Summary of Significant Accounting Policies (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) segment item	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jan. 17, 2023 $ / shares
Number of banking centres | item	50
Operating segment | segment	1
Reportable Segment | segment	1
Deferred tax assets	$ 23,599,000	$ 21,669,000
Period from due date after which accrual of interest income is discontinued	90 days
Goodwill and Core Deposit Intangible
Amortization of Intangible Assets	$ 2,626,000	644,000	$ 494,000
Subsequent Events
Percentage of forfeiture assumption for group grant	5.00%
Number of HELOC segments merged | segment	2
Number of HELOC segments | segment	1
Core Deposits
Goodwill and Core Deposit Intangible
Carrying value of the intangible asset	$ 13,700,000	16,300,000
Amortization of Intangible Assets	2,600,000	$ 644,000	$ 494,000
Expected future annual amortization expense:
Estimated future amortization expense for the core deposit intangible for the year ending December 31, 2023	2,500,000
Estimated future amortization expense for the core deposit intangible for the year ending December 31, 2024	2,300,000
Estimated future amortization expense for the core deposit intangible for the year ending December 31, 2025	2,100,000
Estimated future amortization expense for the core deposit intangible for the year ending December 31, 2026	1,800,000
Estimated future amortization expense for the core deposit intangible for the year ending December 31, 2027	$ 1,600,000
GCFC/ABC Bank | Core Deposits
Goodwill and Core Deposit Intangible
Useful life (in years)	10 years
Subsequent Event
Subsequent Events
Cash dividend declared (per share) | $ / shares				$ 0.05