Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating activities
Net income (loss)	$ 887	$ (56,972)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	10,360	15,709
Amortization of debt issuance costs	758	840
Stock-based compensation	3,741	4,292
Equity investment loss	4,407	9
Deferred income taxes	249	(17,333)
Loss on disposals of long-lived assets	212	33
Impairment of goodwill and intangible assets	0	64,000
Changes in operating assets and liabilities:
Accounts receivable, net of allowance for bad debt	12,143	11,894
Prepaid expenses	(2,802)	(4,007)
Income tax receivable/payable	(3,605)	(827)
Operating leases, net	3,045	2,784
Other assets	(541)	(718)
Accounts payable	(1,664)	1,849
Accrued compensation and benefits	686	2,707
Accrued liabilities	3,529	(554)
Deferred revenue and student deposits	1,793	4,793
Net cash provided by operating activities	33,198	28,499
Investing activities
Capital expenditures	(11,416)	(6,553)
Net cash used in investing activities	(11,416)	(6,553)
Financing activities
Cash paid for repurchase of common stock	(4,133)	(9,001)
Cash received from exercise of stock options	67	0
Preferred stock dividends paid	(3,066)	(2,943)
Cash paid for principal on borrowings and finance leases	(2,801)	(57)
Net cash used in financing activities	(9,933)	(12,001)
Net increase in cash, cash equivalents, and restricted cash	11,849	9,945
Cash, cash equivalents, and restricted cash at beginning of period	144,342	129,458
Cash, cash equivalents, and restricted cash at end of period	156,191	139,403
Supplemental disclosure of cash flow information
Interest paid	5,433	5,143
Income taxes paid	$ 4,297	$ 1,535