UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 293,419	$ 268,918
Marketable securities	6,785	6,501
Tuition receivable, net	64,798	51,277
Income taxes receivable	0	313
Other current assets	52,846	40,777
Total current assets	417,848	367,786
Property and equipment, net	152,742	150,589
Right-of-use lease assets	146,508	149,587
Marketable securities, non-current	21,277	23,377
Intangible assets, net	276,267	276,380
Goodwill	1,303,175	1,285,864
Other assets	50,066	52,297
Total assets	2,367,883	2,305,880
Current liabilities:
Accounts payable and accrued expenses	103,934	95,518
Income taxes payable	9,422	0
Contract liabilities	115,647	73,232
Lease liabilities	25,833	27,005
Total current liabilities	254,836	195,755
Long-term debt	141,743	141,630
Deferred income tax liabilities	39,974	44,595
Lease liabilities, non-current	158,930	162,821
Other long-term liabilities	48,087	47,089
Total liabilities	643,570	591,890
Commitments and contingencies
Stockholders’ equity:
Common stock, par value $0.01; 32,000,000 shares authorized; 24,592,098 and 24,963,542 shares issued and outstanding at December 31, 2021 and March 31, 2022, respectively	250	246
Additional paid-in capital	1,528,328	1,529,969
Accumulated other comprehensive income	29,185	9,203
Retained earnings	166,550	174,572
Total stockholders’ equity	1,724,313	1,713,990
Total liabilities and stockholders’ equity	$ 2,367,883	$ 2,305,880