SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF PARENT - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 14,073	$ 5,997
Total current assets	205,978	151,294
Deferred taxes and other assets	18,758	13,532
Total Assets	2,246,122	2,034,374
Liabilities and Capitalization
Notes payable to bank	42,000	255,500
Income taxes payable	492	1,848
Other liabilities	11,506	10,996
Total current liabilities	166,623	396,522
Notes payable to bank	291,500	22,000
Total other credits	727,835	481,756
Common shareholder’s equity	776,109	709,549	$ 685,947	$ 641,673
Total capitalization	1,351,664	1,156,096
Total liabilities and capitalization	2,246,122	2,034,374
Parent Company
Assets
Cash and cash equivalents	3,547	93	$ 51	$ 441
Intercompany receivable	116	0
Income taxes receivable	39	20
Intercompany note receivables	39,044	159,582
Total current assets	42,746	159,695
Investments in subsidiaries	870,020	799,802
Deferred taxes and other assets	10,135	9,891
Total Assets	922,901	969,388
Liabilities and Capitalization
Notes payable to bank	0	255,500
Income taxes payable	2,422	2,158
Other liabilities	577	454
Total current liabilities	2,999	258,112
Notes payable to bank	141,500	0
Deferred taxes and other liabilities	2,293	1,727
Total other credits	143,793	1,727
Common shareholder’s equity	776,109	709,549
Total capitalization	776,109	709,549
Total liabilities and capitalization	$ 922,901	$ 969,388