ACCOUNTING POLICIES (Revised and Restated) (Restatement of Previously Issued Condensed Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loans held for investment	$ 3,172,254		$ 2,946,637
Loans held for investment, collateralizing secured borrowings	20,714		0
Allowance for credit losses	(38,541)	$ (35,803)	(34,544)	$ (30,209)	$ (29,379)	$ (29,105)
Net loans	3,154,427		2,912,093
Deferred tax assets, net	22,639		19,874
Consumer Program derivative	10,627		0
Other assets	58,079		44,791
Total assets	3,866,212		3,566,664
Secured borrowings	20,595		0
Other liabilities	27,279		22,232
Total liabilities	3,475,790		3,177,696
Retained Earnings	103,281	107,744	101,850	101,770	99,617	97,555
Stockholders' equity	390,422	397,418	388,968	396,330	402,279	410,039
Total liabilities and stockholders' equity	3,866,212		3,566,664
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Loans held for investment	3,173,638
Allowance for credit losses	(38,414)
Net loans	3,135,224
Deferred tax assets, net	20,391
Other assets	72,438
Total assets	3,848,493
Other liabilities	27,361
Total liabilities	3,455,277
Retained Earnings	106,075	108,732	105,247	102,193	99,710	97,631
Stockholders' equity	393,216	$ 398,406	$ 392,365	$ 396,753	$ 402,372	$ 410,115
Total liabilities and stockholders' equity	$ 3,848,493