Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents, unrestricted		$ 127,852	$ 118,009
Restricted cash		1,037	1,012
Total cash, cash equivalents and restricted cash		128,889	119,021
Short-term investments		546,273	485,135
Total cash and cash equivalents, restricted cash and short-term investments		675,162	604,156
Student receivables, gross		69,237	64,011
Allowance for credit losses		(34,382)	(34,613)
Student receivables, net		34,855	29,398
Receivables, other		4,982	4,539
Prepaid expenses		12,558	11,712
Inventories		4,467	5,004
Other current assets		457	155
Total current assets		732,481	654,964
NON-CURRENT ASSETS:
Property and equipment, net of accumulated depreciation of $62,654 and $58,785 as of June 30, 2024 and December 31, 2023, respectively		19,087	21,371
Right of use asset, net		16,455	19,096
Goodwill		241,162	241,162
Intangible assets, net of amortization of $25,828 and $23,612 as of June 30, 2024 and December 31, 2023, respectively		34,002	36,219
Student receivables, gross		8,156	7,028
Allowance for credit losses		(2,889)	(3,169)
Student receivables, net		5,267	3,859
Deferred income tax assets, net		23,242	23,804
Other assets		6,545	6,841
TOTAL ASSETS	[1]	1,078,241	1,007,316
CURRENT LIABILITIES:
Lease liability-operating		5,397	5,701
Accounts payable		13,267	10,766
Accrued expenses:
Payroll and related benefits		25,295	32,684
Advertising and marketing costs		6,984	7,196
Income taxes		6,502	3,974
Other		22,023	13,503
Deferred revenue		55,390	37,215
Total current liabilities		134,858	111,039
NON-CURRENT LIABILITIES:
Lease liability-operating		18,443	21,346
Other liabilities		25,416	33,510
Total non-current liabilities		43,859	54,856
Commitments and Contingencies (Note 8)
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; 90,977,866 and 90,270,306 shares issued, 65,673,430 and 65,544,539 shares outstanding as of June 30, 2024 and December 31, 2023, respectively		910	903
Additional paid-in capital		701,153	694,798
Accumulated other comprehensive loss		(1,721)	(666)
Retained earnings		543,606	480,606
Treasury stock, at cost; 25,304,436 and 24,725,767 shares as of June 30, 2024 and December 31, 2023, respectively		(344,424)	(334,220)
Total stockholders' equity		899,524	841,421
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$ 1,078,241	$ 1,007,316

[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.