Segment Financial Information - Schedule of Segment Reporting Information, by Segment (Details) - USD ($)		3 Months Ended		9 Months Ended
		Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Division Revenues:	[1]	$ 87,332,000	$ 77,050,000	$ 253,101,000	$ 223,124,000
Division Assets:		1,146,297,011		1,146,297,011		$ 1,118,221,935
Reconciliation of Revenues:
Revenues	[1]	87,332,000	77,050,000	253,101,000	223,124,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		3,140,747	11,285,456	20,162,448	35,025,699
Operating Segments
Division Revenues:		82,904,000	72,600,000	238,855,000	209,941,000
Division Assets:		963,501,000		963,501,000		900,607,000
Reconciliation of Revenues:
Revenues		82,904,000	72,600,000	238,855,000	209,941,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		25,941,000	30,254,000	86,762,000	89,074,000
Corporate, Non-Segment | Interest Income
Division Revenues:		30,000	22,000	76,000	67,000
Reconciliation of Revenues:
Revenues		30,000	22,000	76,000	67,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		(27,229,000)	(23,419,000)	(80,844,000)	(67,231,000)
Corporate, Non-Segment | Investment Income
Division Revenues:		2,040,000	1,811,000	5,834,000	5,549,000
Reconciliation of Revenues:
Revenues		2,040,000	1,811,000	5,834,000	5,549,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		4,429,000	4,450,000	14,245,000	13,183,000
Segment Reconciling Items | Timing Difference of Insurance Income Allocation
Division Revenues:		2,356,000	2,613,000	8,315,000	7,557,000
Reconciliation of Revenues:
Revenues		2,356,000	2,613,000	8,315,000	7,557,000
Segment Reconciling Items | Other Revenue Not Allocated
Division Revenues:		2,000	4,000	21,000	10,000
Reconciliation of Revenues:
Revenues		2,000	4,000	21,000	10,000
Division I | Operating Segments
Division Revenues:		11,334,000	10,020,000	32,518,000	29,246,000
Division Assets:		122,641,000		122,641,000		115,423,000
Reconciliation of Revenues:
Revenues		11,334,000	10,020,000	32,518,000	29,246,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		3,227,000	3,711,000	11,006,000	11,193,000
Division II | Operating Segments
Division Revenues:		11,092,000	10,174,000	31,983,000	29,304,000
Division Assets:		133,286,000		133,286,000		123,844,000
Reconciliation of Revenues:
Revenues		11,092,000	10,174,000	31,983,000	29,304,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		4,170,000	5,231,000	13,512,000	15,042,000
Division III | Operating Segments
Division Revenues:		11,405,000	10,592,000	33,367,000	31,083,000
Division Assets:		128,703,000		128,703,000		125,568,000
Reconciliation of Revenues:
Revenues		11,405,000	10,592,000	33,367,000	31,083,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		4,724,000	5,219,000	14,598,000	15,746,000
Division IV | Operating Segments
Division Revenues:		12,737,000	11,469,000	37,203,000	32,653,000
Division Assets:		161,811,000		161,811,000		152,409,000
Reconciliation of Revenues:
Revenues		12,737,000	11,469,000	37,203,000	32,653,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		4,091,000	5,573,000	14,299,000	15,381,000
Division V | Operating Segments
Division Revenues:		8,968,000	7,756,000	26,008,000	22,258,000
Division Assets:		98,914,000		98,914,000		91,774,000
Reconciliation of Revenues:
Revenues		8,968,000	7,756,000	26,008,000	22,258,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		2,717,000	3,234,000	9,230,000	9,244,000
Division VII | Operating Segments
Division Revenues:		8,882,000	7,223,000	24,709,000	20,941,000
Division Assets:		100,318,000		100,318,000		91,753,000
Reconciliation of Revenues:
Revenues		8,882,000	7,223,000	24,709,000	20,941,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		1,916,000	2,691,000	6,860,000	7,442,000
Division VIII | Operating Segments
Division Revenues:		8,751,000	6,450,000	24,959,000	18,400,000
Division Assets:		100,890,000		100,890,000		90,425,000
Reconciliation of Revenues:
Revenues		8,751,000	6,450,000	24,959,000	18,400,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		1,770,000	1,166,000	6,616,000	4,035,000
Division IX | Operating Segments
Division Revenues:		9,735,000	8,916,000	28,108,000	26,056,000
Division Assets:		116,938,000		116,938,000		$ 109,411,000
Reconciliation of Revenues:
Revenues		9,735,000	8,916,000	28,108,000	26,056,000
Reconciliation of Profit:
INCOME BEFORE INCOME TAXES		$ 3,326,000	$ 3,429,000	$ 10,641,000	$ 10,991,000

[1] Includes Finance Charge Income, Investment Income, Insurance Premium Revenues and Other Revenue.