Debt (Details) - Silicon Valley Bank - USD ($)		3 Months Ended
	Apr. 22, 2020	Mar. 31, 2020	Mar. 31, 2019	Apr. 21, 2020
Revolving Credit Facility
Line of Credit Facility [Line Items]
Borrowings outstanding		$ 0	$ 0
Credit facility, maximum borrowing capacity		25,000,000.0
Revolving Credit Facility | Subsequent Event
Line of Credit Facility [Line Items]
Credit facility, extension period	60 days
Standby Letters of Credit
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity		$ 2,500,000
Letter of Credit | Subsequent Event
Line of Credit Facility [Line Items]
Credit facility, maximum borrowing capacity	$ 6,500,000			$ 5,000,000.0