Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2023	Dec. 31, 2022
CURRENT ASSETS:
Cash and cash equivalents, unrestricted		$ 118,009	$ 109,408
Restricted cash		1,012	9,476
Total cash, cash equivalents and restricted cash		119,021	118,884
Short-term investments		485,135	399,315
Total cash and cash equivalents, restricted cash and short-term investments		604,156	518,199
Student receivables, gross		64,011	81,197
Allowance for credit losses		(34,613)	(38,646)
Student receivables, net		29,398	42,551
Receivables, other		4,539	3,457
Prepaid expenses		11,712	8,411
Inventories		5,004	1,904
Other current assets		155	597
Total current assets		654,964	575,119
NON-CURRENT ASSETS:
Property and equipment, net of accumulated depreciation of $58,785 and $54,238 as of December 31, 2023 and 2022, respectively	[1]	21,371	26,038
Right of use asset, net		19,096	26,156
Goodwill		241,162	243,540
Intangible assets, net of amortization of $23,612 and $15,981 as of December 31, 2023 and 2022, respectively		36,219	53,564
Student receivables, gross		7,028	6,345
Allowance for credit losses		(3,169)	(4,495)
Student receivables, net		3,859	1,850
Deferred income tax assets, net		23,804	24,613
Other assets		6,841	6,488
TOTAL ASSETS	[2]	1,007,316	957,368
CURRENT LIABILITIES:
Lease liability-operating		5,701	6,555
Accounts payable		10,766	13,518
Accrued expenses:
Payroll and related benefits		32,684	40,306
Advertising and marketing costs		7,196	8,977
Income taxes		3,974	7,814
Other		13,503	14,621
Deferred revenue		37,215	71,590
Total current liabilities		111,039	163,381
NON-CURRENT LIABILITIES:
Lease liability-operating		21,346	27,286
Other liabilities		33,510	40,856
Total non-current liabilities		54,856	68,142
Commitments and Contingencies (Note 12)
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; 90,270,306 and 89,396,192 shares issued, 65,544,539 and 67,175,485 shares outstanding as of December 31, 2023 and 2022, respectively		903	894
Additional paid-in capital		694,798	684,183
Accumulated other comprehensive loss		(666)	(5,447)
Retained earnings		480,606	347,839
Treasury stock, at cost, 24,725,767 and 22,220,707 shares as of December 31, 2023 and 2022, respectively		(334,220)	(301,624)
Total stockholders' equity		841,421	725,845
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$ 1,007,316	$ 957,368

[1] Property and equipment which were fully depreciated and no longer in use by the Company were retired during the years ended December 31, 2023 and 2022; therefore, both the cost of the asset and the related accumulated depreciation balances were reduced to zero for these assets.

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