Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash flows from operating activities
Net loss	$ (1,009)	$ (15,990)
Adjustments to reconcile net loss to net cash used by operating activities
Depreciation and amortization expense	9,307	8,586
Amortization of deferred financing costs	106	110
Provision for credit losses	687	550
Stock-based compensation	10,959	8,931
Accrued interest	433	503
Impairment and write-off on intangible assets	162
Accretion of investments held to maturity	(913)	(1,238)
Deferred income taxes	89	53
Changes in operating assets and liabilities
Accounts receivable	(2,442)	(3,702)
Prepaid expenses and other current assets	(3,252)	(2,556)
Other noncurrent assets	(725)	1,205
Deferred customer origination costs	448	205
Accounts payable	(1,428)	(23)
Deferred revenue	(1,330)	(261)
Accrued expenses and other liabilities	(17,288)	(21,887)
Operating lease liabilities	(156)	(115)
Total adjustments	(5,343)	(9,639)
Net cash used in operating activities	(6,352)	(25,629)
Cash flows from investing activities
Purchase of marketable securities held to maturity	(87,996)	(62,999)
Proceeds from maturity of marketable securities held to maturity	33,666	111,680
Purchases of equipment	(522)	(332)
Purchases of intangible assets	(4,039)	(3,855)
Supplier advances, net	(656)	(310)
Net cash (used in) provided by investing activities	(59,547)	44,184
Cash flows from financing activities
Repayments of long-term debt	(406)	(406)
Principal payments on finance leases	(77)	(165)
Proceeds from issuance of common stock	3,168	366
Debt issuance costs		(624)
Payment of acquisition-related liability	(100)	(100)
Payment service obligations	(358,197)	(232,652)
Net cash used in financing activities	(355,612)	(233,581)
Net decrease in cash, cash equivalents, and restricted funds held for customers	(421,511)	(215,026)
Cash, cash equivalents, and restricted funds held for customers
Cash, cash equivalents, and restricted funds held for customers, beginning of year	1,985,630	1,634,387
Cash, cash equivalents, and restricted funds held for customers, end of period	1,564,119	1,419,361
Supplementary information of noncash investing and financing activities
Property and equipment purchases in accounts payable and accrued expenses	85	14
Right-of-use assets obtained in exchange for new operating lease obligations		362
Interest paid on notes payable	1,330	1,255
Interest paid on finance leases	1,468	$ 1,448
Cash paid for income taxes	$ 7