Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 33,786	$ 55,146
Total restricted cash	279,594	596,616
Accounts receivable, net of allowance of $10,772 and $11,155 at March 31, 2022 and December 31, 2021, respectively	91,770	102,726
Customer funds receivable	2,049	977
Prepaid expenses and other current assets	99,913	95,506
Total current assets	507,112	850,971
Property and equipment, net	112,675	111,428
Operating lease right-of-use assets	51,808	53,883
Software development costs, net	126,766	121,377
Goodwill	1,056,794	1,058,640
Intangible assets, net	683,348	698,052
Other assets	90,194	77,266
Total assets	2,628,697	2,971,617
Current liabilities:
Trade accounts payable	39,490	22,067
Accrued expenses and other current liabilities	72,195	100,096
Due to customers	278,179	594,273
Debt, current portion	18,116	18,697
Deferred revenue, current portion	350,952	374,499
Total current liabilities	758,932	1,109,632
Debt, net of current portion	963,109	937,483
Deferred tax liability	144,590	148,465
Deferred revenue, net of current portion	4,725	4,247
Operating lease liabilities, net of current portion	50,785	53,386
Other liabilities	1,506	1,344
Total liabilities	1,923,647	2,254,557
Commitments and contingencies (see Note 10)
Stockholders' equity:
Preferred stock, shares authorized	20,000,000	20,000,000
Preferred stock, shares outstanding	0	0
Preferred stock; 20,000,000 shares authorized, none outstanding	$ 0	$ 0
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	180,000,000	180,000,000
Common stock, shares issued	67,658,172	66,165,666
Common stock, $0.001 par value; 180,000,000 shares authorized, 67,658,172 and 66,165,666 shares issued at March 31, 2022 and December 31, 2021, respectively	$ 68	$ 66
Additional paid-in capital	$ 993,223	$ 968,927
Treasury stock, shares	14,715,944	14,182,805
Treasury stock, at cost; 14,715,944 and 14,182,805 shares at March 31, 2022 and December 31, 2021, respectively	$ (535,585)	$ (500,911)
Accumulated other comprehensive income	15,295	6,522
Retained earnings	232,049	242,456
Total stockholders' equity	705,050	717,060
Total liabilities and stockholders' equity	$ 2,628,697	$ 2,971,617