Condensed Financial Information of Parent Company, Condensed Statements of Income (Loss) and Comprehensive Income (Loss) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenues [Abstract]
Total revenues	$ 927,337,984	$ 848,220,546	$ 816,465,791
Expenses [Abstract]
Interest	619,813	620,558	895,605
Total expenses	922,274,508	851,858,645	786,127,283
Income (loss) before income tax benefit and equity in undistributed net (loss) income of subsidiaries	5,063,476	(3,638,099)	30,338,508
Income tax benefit	637,972	(1,678,694)	5,084,334
Net income (loss)	4,425,504	(1,959,405)	25,254,174
Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	4,425,504	(1,959,405)	25,254,174
Other comprehensive income (loss), net of tax
Unrealized gain (loss) - subsidiaries	4,246,693	(45,761,476)	(7,544,805)
Comprehensive income (loss)	10,443,527	(46,946,703)	17,407,113
Parent Company [Member]
Revenues [Abstract]
Dividends from subsidiaries	13,000,000	0	5,000,000
Other	638,000	526,000	481,000
Total revenues	13,638,000	526,000	5,481,000
Expenses [Abstract]
Operating expenses	1,202,000	1,245,000	1,223,000
Interest	787,000	787,000	787,000
Total expenses	1,989,000	2,032,000	2,010,000
Income (loss) before income tax benefit and equity in undistributed net (loss) income of subsidiaries	11,649,000	(1,506,000)	3,471,000
Income tax benefit	(375,000)	(618,000)	(714,000)
Income (loss) before equity in undistributed net (loss) income of subsidiaries	12,024,000	(888,000)	4,185,000
Equity in undistributed net (loss) income of subsidiaries	(7,598,000)	(1,071,000)	21,069,000
Net income (loss)	4,426,000	(1,959,000)	25,254,000
Statements of Comprehensive Income (Loss) [Abstract]
Net income (loss)	4,426,000	(1,959,000)	25,254,000
Other comprehensive income (loss), net of tax
Unrealized gain (loss) - subsidiaries	6,018,000	(44,988,000)	(7,847,000)
Other comprehensive income (loss), net of tax	6,018,000	(44,988,000)	(7,847,000)
Comprehensive income (loss)	$ 10,444,000	$ (46,947,000)	$ 17,407,000