Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
OPERATING ACTIVITIES
Net income	$ 4,057	$ 2,521
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Deferred tax expense	116
Non-cash interest expense	19
Depreciation and amortization	520	510
Stock-based compensation expense	2,049	517
Bad debt expense	1,257	449
Loss on disposal of property and equipment		1
Change in fair value of warrant liabilities		551
Changes in operating assets and liabilities:
Accounts receivable	(20,054)	(16,596)
Prepaid expenses and current other assets	561	(388)
Accounts payable	20,359	3,378
Accrued expenses and other current liabilities	3,256	2,886
Net cash provided by (used in) continuing operations	12,140	(6,171)
Net cash provided by (used in) operating activities	12,140	(6,171)
INVESTING ACTIVITIES
Purchase of property and equipment, net	(693)	(125)
Net cash (used in) continuing operations	(693)	(125)
Net cash provided by discontinued operations		200
Net cash (used in) provided by investing activities	(693)	75
FINANCING ACTIVITIES
Payment of deferred initial public offering costs	(791)
Proceeds from revolving line of credit		41,308
Repayments made against revolving line of credit		(34,977)
Exercise of stock options	597	2
Net cash (used in) provided by continuing operations	(194)	6,333
Net cash (used in) provided by financing activities	(194)	6,333
Net increase in cash and cash equivalents	11,252	237
Cash and cash equivalents, beginning of year	80,382	127
Cash and cash equivalents, end of year	91,634	364
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for interest		$ 38
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING ACTIVITIES
Additions of property and equipment, net included in accrued expenses	$ 68