CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income (loss)	$ 4,391	$ (5,857)
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization	2,119	2,142
Recovery from doubtful accounts	83	497
Stock-based compensation expense	3,122	2,109
Increase (Decrease) in Restructuring Reserve	912	0
Non-cash interest expense	129	2,820
Loss (gain) on extinguishment of debt	2,579	0
Unrealized foreign currency transaction losses (gains)	(1,432)	51
Provision for (benefit from) deferred taxes	501	(207)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	19,702	13,311
Inventories	(1,048)	(3,435)
Prepaid expenses and other assets	(866)	(1,631)
Accounts payable	(2,604)	(4,858)
Accrued expenses, compensation and benefits and other liabilities	(9,887)	(5,323)
Income taxes payable	(259)	40
Deferred revenue and contract assets	(5,129)	(5,264)
Net cash provided by (used in) operating activities	12,313	(5,605)
Cash flows from investing activities:
Purchases of property and equipment	(1,254)	(1,479)
Net cash used in investing activities	(1,254)	(1,479)
Cash flows from financing activities:
Proceeds from revolving line of credit	0	22,000
Proceeds from long-term debt	180,000	0
Repayment of debt	(203,554)	(351)
Common stock repurchases for tax withholdings for net settlement of equity awards	(7,706)	(1,818)
Partial unwind capped call cash receipt	(1,169)	0
Payments for credit facility issuance costs	(2,574)	0
Net cash (used in) provided by financing activities	(35,003)	19,831
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(332)	(402)
Net increase (decrease) in cash, cash equivalents and restricted cash	(24,276)	12,345
Cash, cash equivalents and restricted cash at beginning of period	83,638	72,575
Cash, cash equivalents and restricted cash at end of period	59,362	84,920
Supplemental Cash Flow Information [Abstract]
Cash and cash equivalents at end of period	55,624	81,182
Restricted cash	1,422	1,663
Restricted cash included in other long-term assets	2,316	2,075
Cash paid for income taxes	281	391
Cash paid for interest	$ 3,630	$ 4,450

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The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt.

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The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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The cash inflow associated with security instrument that either represents a creditor or an ownership relationship with the holder of the investment security with a maturity of beyond one year or normal operating cycle, if longer. Includes proceeds from (a) debt, (b) capital lease obligations, (c) mandatory redeemable capital securities, and (d) any combination of (a), (b), or (c).

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Amount of expense (reversal of expense) for expected credit loss on accounts receivable.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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- Definition

Amount of cash restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

Amount of cash restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount of noncash expense for share-based payment arrangement.

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No definition available.

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