Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents, unrestricted		$ 109,408	$ 319,982
Restricted cash		9,476	5,196
Total cash, cash equivalents and restricted cash		118,884	325,178
Short-term investments		399,315	174,213
Total cash and cash equivalents, restricted cash and short-term investments		518,199	499,391
Student receivables, gross		81,197	79,418
Allowance for credit losses		(38,646)	(36,385)
Student receivables, net		42,551	43,033
Receivables, other		3,457	1,692
Prepaid expenses		8,411	6,919
Inventories		1,904	904
Other current assets		597	2,514
Total current assets		575,119	554,453
NON-CURRENT ASSETS:
Property and equipment, net of accumulated depreciation of $54,238 and $113,711 as of December 31, 2022 and 2021, respectively	[1]	26,038	28,355
Right of use asset, net		26,156	36,664
Goodwill		243,540	162,579
Intangible assets, net of amortization of $15,981 and $8,662 as of December 31, 2022 and 2021, respectively		53,564	32,208
Student receivables, gross		6,345	4,242
Allowance for credit losses		(4,495)	(2,870)
Student receivables, net		1,850	1,372
Deferred income tax assets, net		24,613	25,114
Other assets		6,488	6,688
TOTAL ASSETS	[2]	957,368	847,433
CURRENT LIABILITIES:
Lease liability-operating		6,555	9,400
Accounts payable		13,518	10,838
Accrued expenses:
Payroll and related benefits		40,306	25,312
Advertising and marketing costs		8,977	8,690
Income taxes		7,814	211
Other		14,621	15,180
Deferred revenue		71,590	70,613
Total current liabilities		163,381	140,244
NON-CURRENT LIABILITIES:
Lease liability-operating		27,286	35,549
Other liabilities		40,856	21,530
Total non-current liabilities		68,142	57,079
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; 89,396,192 and 88,724,438 shares issued, 67,175,485 and 68,748,662 shares outstanding as of December 31, 2022 and 2021, respectively		894	887
Additional paid-in capital		684,183	674,242
Accumulated other comprehensive loss		(5,447)	(96)
Retained earnings		347,839	251,972
Treasury stock, at cost, 22,220,707 and 19,975,776 shares as of December 31, 2022 and 2021, respectively		(301,624)	(276,895)
Total stockholders' equity		725,845	650,110
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$ 957,368	$ 847,433

[1] Property and equipment which were fully depreciated and no longer in use by the Company were retired during the years ended December 31, 2022 and 2021; 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.