CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 25,997	$ 12,634
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,596	6,362
Finance lease amortization	175	0
Deferred income taxes	1,632	1,294
Gain on sale of assets	(30,918)	(177)
Impairment of goodwill and long-lived assets	4,220	1,049
Fixed asset donation	(239)	(408)
Provision for credit losses	41,637	34,915
Stock-based compensation expense	5,894	3,111
(Increase) decrease in assets:
Accounts receivable	(45,757)	(48,637)
Inventories	(330)	103
Prepaid expenses and current assets	900	(11)
Other assets	1,041	450
Increase (decrease) in liabilities:
Accounts payable	5,039	(2,033)
Accrued expenses	5,027	(7,016)
Unearned tuition	2,752	(1,251)
Income taxes payable	777	1,038
Other liabilities	1,115	(541)
Total adjustments	(439)	(11,752)
Net cash provided by operating activities	25,558	882
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(40,699)	(8,986)
Proceeds from sale of property and equipment	33,310	2,390
Proceeds from sale of short-term investments	39,102	0
Purchase of short-term investments	(24,344)	(14,758)
Net cash provided by (used in) investing activities	7,369	(21,354)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net share settlement for equity-based compensation	(2,054)	(1,992)
Dividend payment for preferred stock	0	(1,111)
Finance lease principal	0	0
Share repurchase	(891)	(9,445)
Net cash used in financing activities	(2,945)	(12,548)
NET INCREASE (DECREASE) IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH	29,982	(33,020)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - Beginning of year	50,287	83,307
CASH, CASH EQUIVALENTS AND RESTRICTED CASH - End of year	80,269	50,287
Cash paid during the year for:
Interest	110	171
Income taxes	7,201	1,471
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Liabilities accrued for or noncash purchases of property and equipment	$ 3,522	$ 1,300