Condensed Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2022	Dec. 31, 2021
CURRENT ASSETS:
Cash and cash equivalents, unrestricted		$ 148,749	$ 319,982
Restricted cash		1,191	5,196
Total cash, cash equivalents and restricted cash		149,940	325,178
Short-term investments		366,840	174,213
Total cash and cash equivalents, restricted cash and short-term investments		516,780	499,391
Student receivables, gross		73,129	79,418
Allowance for credit losses		(40,943)	(36,385)
Student receivables, net		32,186	43,033
Receivables, other		8,617	1,692
Prepaid expenses		10,306	6,919
Inventories		1,168	904
Other current assets		2,737	2,514
Total current assets		571,794	554,453
NON-CURRENT ASSETS:
Property and equipment, net of accumulated depreciation of $116,233 and $113,711 as of June 30, 2022 and December 31, 2021, respectively		26,952	28,355
Right of use asset, net		32,443	36,664
Goodwill		162,579	162,579
Intangible assets, net of amortization of $11,994 and $8,662 as of June 30, 2022 and December 31, 2021, respectively		28,877	32,208
Student receivables, gross		4,138	4,242
Allowance for credit losses		(2,843)	(2,870)
Student receivables, net		1,295	1,372
Deferred income tax assets, net		25,671	25,114
Other assets		6,450	6,688
TOTAL ASSETS	[1]	856,061	847,433
CURRENT LIABILITIES:
Lease liability-operating		7,278	9,400
Accounts payable		12,419	10,838
Accrued expenses:
Payroll and related benefits		22,887	25,312
Advertising and marketing costs		9,548	8,690
Income taxes		7,995	211
Other		14,504	15,180
Deferred revenue		35,567	70,613
Total current liabilities		110,198	140,244
NON-CURRENT LIABILITIES:
Lease liability-operating		31,990	35,549
Other liabilities		21,113	21,530
Total non-current liabilities		53,103	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; 89,358,511 and 88,724,438 shares issued, 67,756,553 and 68,748,662 shares outstanding as of June 30, 2022 and December 31, 2021, respectively		894	887
Additional paid-in capital		679,400	674,242
Accumulated other comprehensive loss		(3,174)	(96)
Retained earnings		309,817	251,972
Treasury stock, at cost; 21,601,958 and 19,975,776 shares as of June 30, 2022 and December 31, 2021, respectively		(294,177)	(276,895)
Total stockholders' equity		692,760	650,110
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY		$ 856,061	$ 847,433

[1] Total assets do not include intercompany receivable or payable activity between institutions and corporate and investments in subsidiaries.