CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 259	$ 272	$ 2,426	$ 4,489	$ 532	$ 6,915
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization					3,057	3,693
Amortization of deferred finance charges					0	91
Deferred income taxes					64	2,022
Gain on disposition of assets					(195)	0
Fixed asset donations					(145)	(2,050)
Provision for doubtful accounts					16,165	11,108
Stock-based compensation expense					1,730	1,337
(Increase) decrease in assets:
Accounts receivable					(21,838)	(13,878)
Inventories					(361)	(933)
Prepaid income taxes and income taxes payable					(1,793)	(700)
Prepaid expenses and current assets					345	(529)
Other assets, net					(84)	384
Increase (decrease) in liabilities:
Accounts payable					1,301	(3,425)
Accrued expenses					(4,782)	(1,856)
Unearned tuition					(3,723)	(1,270)
Other liabilities					(265)	158
Total adjustments					(10,524)	(5,848)
Net cash (used in) provided by operating activities					(9,992)	1,067
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures					(3,582)	(3,516)
Proceeds from sale of property and equipment					2,390	0
Net cash used in investing activities					(1,192)	(3,516)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payments on borrowings					0	(1,000)
Proceeds from borrowings					0	0
Dividend payment for preferred stock					(608)	(608)
Share repurchase					(2,538)	0
Net share settlement for equity-based compensation					(1,992)	(962)
Net cash used in financing activities					(5,138)	(2,570)
NET DECREASE IN CASH AND CASH EQUIVALENTS					(16,322)	(5,019)
CASH AND CASH EQUIVALENTS-Beginning of period		$ 83,307		$ 38,026	83,307	38,026	$ 38,026
CASH AND CASH EQUIVALENTS-End of period	$ 66,985		$ 33,007		66,985	33,007	$ 83,307
Cash paid for:
Interest					118	566
Income taxes					1,206	652
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Liabilities accrued for or noncash additions of fixed assets					$ 591	$ 3,362