Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating activities:
Net income (loss)	$ (28,640)	$ (22,029)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, Depletion and Amortization	4,647	3,068
Amortization of Financing Costs and Discounts	373	373
Share-based compensation	11,225	8,170
Provision for doubtful accounts	(91)	(559)
Asset Impairment Charges	1,551	0
Changes in operating assets and liabilities:
Accounts and unbilled receivables	(12,130)	(3,610)
Increase (Decrease) in Deferred Costs	(48)	867
Prepaid expenses and other assets	(262)	(395)
Increase (Decrease) in Other Noncurrent Assets and Liabilities, Net	(739)	(173)
Accounts payable	3,903	2,012
Accrued liabilities	(109)	3,918
Accrued payroll and other employee benefits	(13,246)	(7,573)
Deferred revenue	22,552	11,502
Net cash provided by (used in) operating activities	(11,014)	(4,429)
Investing activities:
Purchases of property and equipment	(461)	(1,300)
Payments to Acquire Other Investments	0	(501)
Net cash provided by (used in) investing activities	(461)	(1,801)
Financing activities:
Proceeds from Stock Plans	1,443	1,596
Tax withholding related to net share settlement of restricted stock units	(212)	(352)
Net cash provided by (used in) financing activities	1,231	1,244
Effect of Exchange Rate on Cash and Cash Equivalents	84	(219)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(10,160)	(5,205)
Cash and cash equivalents:
Beginning of period	227,553	329,134
End of period	217,393	323,929
Capital Expenditures Incurred but Not yet Paid	$ 45	$ 328