Stock Options and Warrants - Additional Information (Details) - USD ($)		1 Months Ended	3 Months Ended		9 Months Ended
	May 20, 2021	Jul. 31, 2018	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024	May 25, 2023	Sep. 30, 2022	Jul. 01, 2022	Jan. 01, 2021	May 29, 2019	Dec. 31, 2017
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Risk-free interest rate minimum					4.06%	3.75%
Risk-free interest rate maximum					4.47%	4.64%
Dividend yield rate					0.00%	0.00%
Estimated volatility rate, minimum					24.25%	23.42%
Estimated volatility rate, maximum					24.82%	24.16%
Expected lives of options					7 years 6 months	7 years 6 months
Share-based compensation expense			$ 128,000	$ 143,000	$ 391,000	$ 396,000
Unrecognized compensation costs related non-vested stock			838,000		$ 838,000
Total unrecognized compensation cost related to nonvested restricted stock awards recognized over remaining weighted average period					5 years 3 months 25 days
Total intrinsic value of outstanding in-the-money stock options			15,800,000	9,500,000	$ 15,800,000	9,500,000
Intrinsic value outstanding in-the-money exercisable stock options			$ 12,100,000	7,200,000	12,100,000	7,200,000
Intrinsic value of stock options exercised					$ 1,900,000	283,000
Weighted average remaining contractual life of outstanding stock warrants					4 years
Preferred stock, par value			$ 1		$ 1		$ 1	$ 1
Common stock, par value			1		1		1	$ 1		$ 1
Series B Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Preferred stock, par value			$ 1		$ 1		$ 1
Private Placement Offering
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Warrants to purchase									175,000
Private Placement Offering | Series B Preferred Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Preferred stock, par value									$ 1
Private Placement Offering | Non-Voting Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, par value									$ 1
Directors, Executive Officers and Other Key Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Expiration period					10 years
Vesting period					5 years
RSAs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Contractual term					10 years
Share-based compensation expense			$ 292,000	$ 309,000	$ 767,000	$ 844,000
Total unrecognized compensation cost related to nonvested restricted stock awards recognized over remaining weighted average period					7 years 1 month 28 days
Unrecognized compensation costs related to non-vested RSAs			$ 1,700,000		$ 1,700,000
Warrants Expiring September 30, 2029
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Warrants exercisable year					7 years
Warrants expires date					Sep. 30, 2029
Preferred warrants underlying shares outstanding			175,000	175,000	175,000	175,000
Preferred warrants underlying shares exercisable			175,000	175,000	175,000	175,000
Weigted average exercise price, outstanding			$ 22.5	$ 22.5	$ 22.5	$ 22.5
Weigted average exercise price, exercisable			$ 22.5	$ 22.5	22.5	22.5
Minimum | Directors, Executive Officers and Other Key Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted exercise price					$ 30.31	19.38
Minimum | RSAs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period					2 years
Maximum | Directors, Executive Officers and Other Key Employees
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted exercise price					$ 35.4	$ 25.67
Maximum | RSAs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period					4 years
2013 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized to grant			500,000		500,000
Additional issuance shares												152,750
Remaining available for grant for future awards			0		0
2019 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Additional issuance shares	800,000
Additional options shares grant in period	500,000
Remaining available for grant for future awards			96,079		96,079
2017 Non-Employee Director Stock Option Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized to grant													100,000
Additional options shares grant in period		50,000
Description of the plan					Options are generally granted with an exercise price equal to the market price of the Company’s stock at the date of the grant. Option awards generally vest based on five years of continuous service and have 10-year contractual terms for non-controlling participants as defined by the Director Plan. Other grant terms can vary for controlling participants as defined by the Director Plan.
Expiration period					10 years
Remaining available for grant for future awards			13,806		13,806
Vesting period					5 years
2017 Non-Employee Director Stock Option Plan | Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized to grant		150,000
2017 Non-Employee Director Stock Option Plan | Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares authorized to grant											187,000