Subordinated Debentures and Junior Subordinated Debentures Owed to Unconsolidated Subsidiary Trust - Additional Information (Details) - USD ($) $ in Millions		1 Months Ended		12 Months Ended
	Dec. 15, 2023	Sep. 30, 2020	Mar. 31, 2007	Dec. 31, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Period for Interest Deferral on Trust Preferred Securities				5 years
Premier Statutory Trusts II [Member]
Debt Instrument [Line Items]
Proceeds from subordinated debentures			$ 15.5
Proceeds from Issuance of Trust Preferred Securities			$ 15.0
Coupon Rate on Preferred Securities, Period End				7.15%	6.27%
Preferred Securities Variable Interest Rate				LIBOR rate plus 1.5%
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Description				The Trust Preferred Securities and Subordinated Debentures mature on June 15, 2037, but can be redeemed at the Company’s option at any time now.
Premier Statutory Trusts II [Member] | SOFR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.50%
Preferred Securities Variable Interest Rate	SOFR rate plus 1.5%
Premier Statutory Trusts I [Member]
Debt Instrument [Line Items]
Proceeds from subordinated debentures				$ 20.6
Proceeds from Issuance of Trust Preferred Securities				$ 20.0
Coupon Rate on Preferred Securities, Period End				7.03%	6.15%
Preferred Securities Variable Interest Rate				LIBOR rate plus 1.38%
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Description				The Trust Preferred Securities and Subordinated Debentures mature on December 15, 2035, but can be redeemed at the Company’s option at any time now.
Premier Statutory Trusts I [Member] | SOFR [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.38%
Preferred Securities Variable Interest Rate	SOFR rate plus 1.38%
Subordinated Debt [Member]
Debt Instrument [Line Items]
Aggregate principal amount		$ 50.0
Subordinated notes, due date		Sep. 30, 2030
Subordinated notes, fixed Interest rate		4.00%
Subordinated notes, fixed interest rate, period		5 years
Basis spread on variable rate		388.50%
Proceeds from subordinated debentures		$ 48.7