Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Mar. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents, unrestricted		$ 89,845	$ 109,408
Restricted cash		9,476	9,476
Total cash, cash equivalents and restricted cash		99,321	118,884
Short-term investments		420,943	399,315
Total cash and cash equivalents, restricted cash and short-term investments		520,264	518,199
Student receivables, gross		84,901	81,197
Allowance for credit losses		(39,912)	(38,646)
Student receivables, net		44,989	42,551
Receivables, other		4,309	3,457
Prepaid expenses		11,383	8,411
Inventories		3,765	1,904
Other current assets		735	597
Total current assets		585,445	575,119
NON-CURRENT ASSETS:
Property and equipment, net of accumulated depreciation of $56,702 and $54,238 as of March 31, 2023 and December 31, 2022, respectively		25,752	26,038
Right of use asset, net		24,277	26,156
Goodwill		243,941	243,540
Intangible assets, net of amortization of $18,604 and $15,981 as of March 31, 2023 and December 31, 2022, respectively		50,941	53,564
Student receivables, gross		5,499	6,345
Allowance for credit losses		(4,032)	(4,495)
Student receivables, net		1,467	1,850
Deferred income tax assets, net		24,309	24,613
Other assets		6,880	6,488
TOTAL ASSETS	[1]	963,012	957,368
CURRENT LIABILITIES:
Lease liability-operating		6,043	6,555
Accounts payable		15,178	13,518
Accrued expenses:
Payroll and related benefits		22,448	40,306
Advertising and marketing costs		7,654	8,977
Income taxes		20,079	7,814
Other		19,027	14,621
Deferred revenue		44,710	71,590
Total current liabilities		135,139	163,381
NON-CURRENT LIABILITIES:
Lease liability-operating		25,837	27,286
Other liabilities		40,864	40,856
Total non-current liabilities		66,701	68,142
STOCKHOLDERS' EQUITY:
Preferred stock, $0.01 par value; 1,000,000 shares authorized; none issued or outstanding
Common stock, $0.01 par value; 300,000,000 shares authorized; 89,923,857 and 89,396,192 shares issued, 67,477,996 and 67,175,485 shares outstanding as of March 31, 2023 and December 31, 2022, respectively		899	894
Additional paid-in capital		686,719	684,183
Accumulated other comprehensive loss		(4,121)	(5,447)
Retained earnings		382,323	347,839
Treasury stock, at cost; 22,445,861 and 22,220,707 shares as of March 31, 2023 and December 31, 2022, respectively		(304,648)	(301,624)
Total stockholders' equity		761,172	725,845
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$ 963,012	$ 957,368

[1] Total assets are presented on a condensed consolidated basis and do not include intercompany receivable or payable activity between institutions and corporate and investments in subsidiaries.