Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash	$ 374,144	$ 361,623
Short-term investments	19,907	20,076
Accounts receivable, net of allowance for doubtful accounts of $3,347 and $2,514 respectively	60,176	51,095
Prepaid taxes	0	51
Prepaid expenses and other current assets	6,142	5,266
Total current assets	460,369	438,111
Property and equipment, net	20,903	18,720
Goodwill	192,819	197,073
Intangible assets, net	100,043	110,390
Operating lease assets with right-of-use	21,520	23,339
Deferred tax assets	3,424	474
Other assets	633	893
Total assets	799,711	789,000
Current liabilities:
Accounts payable	7,680	3,783
Current operating lease liability	3,696	4,073
Accrued expenses and other current liabilities	14,126	16,638
Accrued compensation expenses	2,834	14,540
Income taxes payable	5,034	474
Contract liabilities	37,003	30,492
Total current liabilities	70,373	70,000
Non-current operating lease liability	21,833	24,021
Convertible senior notes	454,442	453,194
Other liabilities	0	2,779
Deferred tax liabilities	14,661	16,249
Total liabilities	561,309	566,243
Leases and contingencies (see Note 9)
Stockholders’ equity:
Preferred stock, $0.001 par value; 5,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $0.001 par value; 100,000,000 shares authorized; 57,276,651 and 57,144,740 shares issued, respectively 29,507,362 and 29,633,898 shares outstanding respectively	57	57
Treasury stock, at cost; 27,769,289 and 27,510,842 shares, respectively	(217,288)	(199,796)
Additional paid-in capital	406,933	383,436
Accumulated other comprehensive income (loss)	(9,641)	298
Retained earnings	58,341	38,762
Total stockholders’ equity	238,402	222,757
Total liabilities and stockholders’ equity	$ 799,711	$ 789,000