Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 30,531	$ 31,810
Restricted cash due to customers	421,915	545,485
Accounts receivable, net of allowance of $9,025 and $5,529 at June 30, 2020 and December 31, 2019, respectively	129,675	88,868
Customer funds receivable	1,284	524
Prepaid expenses and other current assets	83,699	67,852
Total current assets	667,104	734,539
Property and equipment, net	36,539	35,546
Operating lease right-of-use assets	95,575	104,400
Software development costs, net	106,044	101,302
Goodwill	630,687	634,088
Intangible assets, net	292,187	317,895
Other assets	68,673	65,193
Total assets	1,896,809	1,992,963
Current liabilities:
Trade accounts payable	41,029	47,676
Accrued expenses and other current liabilities	52,893	73,317
Due to customers	423,199	546,009
Debt, current portion	9,194	7,500
Deferred revenue, current portion	332,570	314,335
Total current liabilities	858,885	988,837
Debt, net of current portion	478,919	459,600
Deferred tax liability	45,108	44,594
Deferred revenue, net of current portion	4,626	1,802
Operating lease liabilities, net of current portion	86,586	95,624
Other liabilities	11,883	5,742
Total liabilities	1,486,007	1,596,199
Commitments and contingencies (see Note 9)
Stockholders' equity:
Preferred stock; 20,000,000 shares authorized, none outstanding	0	0
Common stock, $0.001 par value; 180,000,000 shares authorized, 60,901,100 and 60,206,091 shares issued at June 30, 2020 and December 31, 2019, respectively	61	60
Additional paid-in capital	491,450	457,804
Treasury stock, at cost; 11,332,912 and 11,066,354 shares at June 30, 2020 and December 31, 2019, respectively	(311,661)	(290,665)
Accumulated other comprehensive loss	(14,476)	(5,290)
Retained earnings	245,428	234,855
Total stockholders' equity	410,802	396,764
Total liabilities and stockholders' equity	$ 1,896,809	$ 1,992,963