Leases (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	May 02, 2019
Lessee, Lease, Description [Line Items]
Finance lease, term of contract				3 years
Rent expense		$ 1.0	$ 1.0
Hopewell Junction, NY [Member]
Lessee, Lease, Description [Line Items]
Lease expiration date		May 31, 2024
Santa Clara, California [Member]
Lessee, Lease, Description [Line Items]
Lease extension term	2 years
Lease extension expiration date	Oct. 31, 2021