CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Sep. 30, 2021
Current assets:
Cash and cash equivalents	$ 94,847	$ 128,428
Marketable securities	20,317	30,435
Accounts receivable, net of allowances of $157 and $395 at September 30, 2022 and September 30, 2021, respectively	45,073	45,560
Deferred costs	7,098	6,095
Prepaid expenses and other current assets	60,184	76,530
Total current assets	227,519	287,048
Long-term marketable securities	11,584	7,339
Property and equipment, net	37,707	31,505
Deferred costs	22,451	31,702
Operating lease right of use assets	14,702	14,901
Goodwill	890,802	1,128,511
Intangible assets, net	9,700	25,348
Deferred tax assets	51,989	159,293
Other assets	52,039	20,081
Total assets	1,318,493	1,705,728
Current liabilities:
Accounts payable	10,372	11,636
Deferred revenue	72,662	78,394
Short-term operating lease liabilities	5,071	4,562
Short-term debt	10,938	6,250
Accrued expenses and other current liabilities	47,990	64,467
Total current liabilities	147,033	165,309
Long-term debt, net of discounts and issuance costs	259,436	265,093
Deferred revenue, net of current portion	165,972	198,343
Long-term operating lease liabilities	11,375	12,216
Other liabilities	21,727	32,822
Total liabilities	605,543	673,783
Commitments and contingencies (Note 13)
Stockholders' Equity:
Common stock, $0.01 par value, 560,000 shares authorized as of September 30, 2022; 39,430 and 38,025 shares issued and outstanding as of September 30, 2022 and September 30, 2021, respectively	394	381
Accumulated other comprehensive (loss) income	(33,737)	1,634
Additional paid-in capital	1,029,542	1,002,353
(Accumulated deficit) Retained earnings	(283,249)	27,577
Total stockholders' equity	712,950	1,031,945
Total liabilities and stockholders' equity	$ 1,318,493	$ 1,705,728