CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets:
Cash	$ 27,055	$ 21,595
Funds held in escrow, including funds in transit	107,479	87,195
Trade and client receivables – net of allowance of $2,703 as of September 30, 2018 and $1,577 as of December 31, 2017, respectively	41,592	30,762
Prepaid expenses and other current assets	5,326	4,574
Total current assets	181,452	144,126
Property and equipment, net	6,260	3,514
Goodwill	118,219	118,219
Intangible assets, net	6,671	8,672
Other assets, noncurrent	6,240	658
Total assets	318,842	275,189
Current liabilities:
Accounts payable	5,471	462
Escrow funds payable	107,479	87,195
Debt, current	29,594	10,342
Accrued expenses and other current liabilities	16,911	16,030
Deferred revenue	717	614
Total current liabilities	160,172	114,643
Debt, noncurrent	19,304	23,491
Other liabilities, noncurrent	6,110	1,936
Total liabilities	185,586	140,070
Commitments and contingencies (Note 5)
Redeemable convertible preferred stock, $0.0001 par value; 76,141,345 shares authorized as of September 30, 2018 and December 31, 2017; 61,279,079 shares issued and outstanding as of September 30, 2018 and December 31, 2017; aggregate liquidation preference of $120,047 as of September 30, 2018 and December 31, 2017	166,486	166,486
Stockholders’ deficit:
Common stock, $0.0001 par value; 150,000,000 shares authorized as of September 30, 2018 and December 31, 2017; 36,945,317 and 33,740,323 shares issued and outstanding as of September 30, 2018 and December 31, 2017, respectively	4	3
Additional paid-in capital	104,900	92,222
Accumulated deficit	(138,134)	(123,592)
Total stockholders’ deficit	(33,230)	(31,367)
Total liabilities, redeemable convertible preferred stock, and stockholders' deficit	$ 318,842	$ 275,189