Acquisition - Narrative (Details) - USD ($) $ in Thousands		6 Months Ended
	Jun. 17, 2021	Jun. 30, 2021	Jun. 30, 2020
Business Acquisition [Line Items]
Cash paid for acquisition net of cash acquired		$ 22,774	$ 0
Pulse Q&A Inc.
Business Acquisition [Line Items]
Percent of outstanding membership interests acquired	100.00%
Purchase price	$ 30,000
Cash paid for acquisition net of cash acquired	22,800
Future compensation expense	$ 4,500
Future compensation expense, recognition period	3 years
Acquired finite lived intangible assets and goodwill	$ 30,600
Acquired other liabilities	$ 600