Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
OPERATING ACTIVITIES:
Net income (loss)	$ 712	$ (4,193)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	13,180	11,293
Provision for credit loss	205	589
Amortization of debt discount and issuance costs	5,631	5,342
Stock-based compensation expense	20,296	7,705
Deferred income taxes	(1)	(5,961)
Other, net	34	3
Changes in assets and liabilities:
Accounts receivable	24,852	23,264
Prepaid expenses and other current assets	(3,367)	1,817
Other long-term assets	(5,067)	(960)
Accounts payable	(967)	(3,841)
Accrued compensation and benefits	1,548	497
Other accrued expenses and current liabilities	2,999	161
Deferred revenue	(5,333)	(2,315)
Net cash provided by operating activities	54,722	33,401
INVESTING ACTIVITIES:
Capital expenditures	(5,391)	(2,530)
Payments for acquisition of developed technology	(344)	(433)
Payments for acquisition of businesses, net of cash acquired		(2,270)
Other investing activities, net	(45)	142
Net cash used in investing activities	(5,780)	(5,091)
FINANCING ACTIVITIES:
Payments on revolving commitment	(30,000)
Proceeds from the exercise of stock options	885	477
Other financing activities	(206)	(210)
Net cash (used in) provided by financing activities	(29,321)	267
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(847)	(1,148)
Net increase in cash, cash equivalents and restricted cash	18,774	27,429
Cash, cash equivalents and restricted cash at beginning of year	241,547	223,497
Cash, cash equivalents and restricted cash at end of period	260,321	250,926
Supplemental disclosure of cash flow:
Interest paid	339	306
Income taxes paid	3,744	9,491
Supplemental disclosure of non-cash investing and financing activities:
Finance leases		100
Property and equipment in accounts payable, other current liabilities and other liabilities	$ 631	$ 343