Leases (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating Leased Assets [Line Items]
Option to extend the lease, term	up to 5 years
Option to terminate the lease, term	within 1 year
Operating lease payments related to extended lease terms		$ 2.3
Lease payments for leases signed, but not yet commenced		$ 8.1
Minimum [Member]
Operating Leased Assets [Line Items]
Remaining terms of leases under operating lease	1 year
Maximum [Member]
Operating Leased Assets [Line Items]
Remaining terms of leases under operating lease	10 years