Restructuring and Related Charges (Details) $ in Millions	1 Months Ended	12 Months Ended
	Oct. 31, 2013 item	Dec. 31, 2020 USD ($)
Restructuring Cost and Reserve [Line Items]
Campus location closed | item	20
Lease marginal borrowing rate	4.50%
Lease and Related Costs, Net
Restructuring Cost and Reserve [Line Items]
Right-of-use lease asset impairment charges and early lease termination costs | $		$ 0.4