CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (13,274)	$ (782)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	2,105	1,573
Stock-based compensation	5,351	1,201
Accretion of discount on investment in marketable debt securities	(2,346)	(461)
Revaluation of warrant liabilities and forfeiture of warrants	717	(305)
Issuance of warrants		52
Deferred income taxes		(44)
Changes in assets and liabilities:
Accounts receivable	(393)	(2,372)
Unbilled revenue	(1,114)	(883)
Prepaid expenses and other current assets	(1,608)	(2,996)
Other assets	(581)	(601)
Accounts payable	1,146	2,259
Accrued and other current liabilities	4,551	855
Other long-term liabilities	187	(109)
Deferred revenue	1,110	434
Net cash used in operating activities	(4,149)	(2,179)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of corporate and customer fund short-term investments	(414,648)	(415,326)
Proceeds from maturities of corporate and customer fund short-term investments	407,236	382,984
Proceeds from sale of corporate and customer fund short-term investments	22,725	29,162
Increase in restricted cash and cash equivalents and other receivables included in funds held for customers	(173,730)	(298,650)
Purchases of property and equipment	(2,972)	(1,571)
Capitalization of internal-use software costs	(340)	(833)
Decrease in restricted cash	550
Net cash used in investing activities	(161,179)	(304,234)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock upon initial public offering, net of underwriting discounts and commissions and other offering costs	226,565
Proceeds from issuance of redeemable convertible preferred stock, net of issuance costs		69,801
Increase in customer fund deposits liability	162,457	297,813
Payments on bank borrowings		(417)
Proceeds from exercise of stock options	901	949
Proceeds from exercise of stock warrants	144
Payments of deferred debt issuance costs	(151)
Net cash provided by financing activities	389,916	368,146
NET INCREASE IN CASH AND CASH EQUIVALENTS	224,588	61,733
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	90,306	22,401
CASH AND CASH EQUIVALENTS, END OF PERIOD	314,894	84,134
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION:
Cash paid for interest	146	294
NONCASH FINANCING ACTIVITIES:
Conversion of redeemable convertible preferred stock into common stock upon initial public offering	276,307
Reclassification of redeemable convertible preferred stock warrant liabilities into additional paid-in capital upon initial public offering	1,405
Accrued offering costs	$ 1,084
Accrued preferred stock issuance costs		$ 2,700