Acquisition - Narrative (Details) - USD ($)		9 Months Ended
	Jun. 17, 2021	Sep. 30, 2021	Sep. 30, 2020
Business Acquisition [Line Items]
Cash paid for acquisition net of cash acquired		$ 23,030,000	$ 0
Pulse Q&A Inc.
Business Acquisition [Line Items]
Percent of outstanding membership interests acquired	100.00%
Purchase price	$ 29,100,000
Cash paid for acquisition net of cash acquired	23,000,000
Future compensation expense	$ 4,500,000
Future compensation expense, recognition period	3 years
Acquired finite lived intangible assets and goodwill	$ 30,500,000
Acquired other liabilities	1,400,000
Tax deductible goodwill	$ 0