Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents shown in balance sheets	$ 72,909	$ 103,629
Marketable investments (Note 2)	51,580	19,688
Accounts receivable, net of allowance for expected credit losses of $574 and $560 as of December 31, 2023 and 2022, respectively (Note 1,13)	58,999	73,345
Deferred commissions	23,207	24,559
Prepaid expenses and other current assets	9,305	14,069
Total current assets	216,000	235,290
Property and equipment, net	19,401	23,208
Operating lease right-of-use assets	39,722	49,970
Goodwill	244,257	242,149
Intangible assets, net	37,637	49,504
Other assets	7,157	8,317
Total assets	564,174	608,438
Current Liabilities:
Accounts payable	1,796	361
Accrued expenses and other current liabilities	81,482	91,007
Deferred revenue	156,798	178,021
Total current liabilities	240,076	269,389
Long-term debt	35,000	50,000
Non-current operating lease liabilities	37,673	50,751
Other non-current liabilities (Note 13)	11,160	16,642
Total liabilities	323,909	386,782
Commitments and contingencies (Note14)
Stockholders' Equity:
Preferred stock, $0.01 par value Authorized - 500 shares; issued and outstanding - none	0	0
Common stock, $0.01 par value Authorized - 125,000 shares Issued - 24,684 and 24,367 shares as of December 31, 2023 and 2022, respectively Outstanding - 19,248 and 19,062 shares as of December 31, 2023 and 2022, respectively	247	244
Additional paid-in capital	278,057	261,766
Retained earnings	177,681	174,631
Treasury stock - 5,437 and 5,305 shares as of December 31, 2023 and 2022, respectively	(211,149)	(207,067)
Accumulated other comprehensive loss	(4,571)	(7,918)
Total stockholders’ equity	240,265	221,656
Total liabilities and stockholders’ equity	$ 564,174	$ 608,438