Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating activities
Net (loss) income	$ 16,113	$ (47,286)	$ (114,993)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	19,303	27,816	32,127
Amortization and write-off of debt issuance costs	1,480	1,631	6,480
Stock-based compensation	7,668	7,740	8,009
Equity investment loss	4,407	5,236	21
Deferred income taxes	4,049	(16,005)	(41,910)
Loss on assets held for sale	1,618	2,425	0
Loss on disposal of long-lived assets	383	554	1,176
Gain on acquisition	0	0	(3,828)
Impairment of goodwill and intangible assets	0	64,000	146,900
Other	0	0	16
Changes in operating assets and liabilities:
Accounts receivable, net of allowance for bad debt	(11,492)	(8,620)	(2,045)
Prepaid expenses	(716)	(1,623)	354
Income tax receivable/payable	(475)	2,397	2,432
Operating lease assets, net	2,723	3,193	1,373
Other assets	(1,111)	(259)	519
Accounts payable	(816)	4,855	(10,207)
Accrued compensation and benefits	3,835	1,701	(141)
Accrued liabilities	2,259	(2,311)	2,917
Deferred revenue and student deposits	(356)	70	15
Net cash provided by operating activities	48,872	45,514	29,215
Investing activities
Cash paid for acquisition, net of cash acquired	0	0	1,951
Capital expenditures	(21,082)	(13,895)	(16,389)
Proceeds from the sale of real property	0	123	765
Net cash used in investing activities	(21,082)	(13,772)	(13,673)
Financing activities
Cash paid for repurchase of common/restricted stock	(4,238)	(10,739)	(1,538)
Preferred stock dividends paid	(6,056)	(6,005)	0
Cash received from exercise of stock options	67	0	0
Cash received from issuance of preferred stock	0	0	39,691
Cash paid for principal on borrowings and finance leases	(2,964)	(114)	(73,864)
Net cash used in financing activities	(13,191)	(16,858)	(35,711)
Net (decrease) increase in cash, cash equivalents, and restricted cash	14,599	14,884	(20,169)
Cash, cash equivalents, and restricted cash at beginning of period	144,342	129,458	149,627
Cash, cash equivalents, and restricted cash at end of period	158,941	144,342	129,458
Supplemental disclosures of cash flow information
Interest paid	10,725	10,603	12,496
Income taxes paid	$ 6,304	$ 2,417	$ 3,996