Other Current and Long-Term Assets (Schedule of Other Noncurrent Assets) (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Other Assets, Noncurrent [Abstract]
Customer acquisition costs	$ 98,117	$ 89,862
Contract assets	66,226	31,269
Taxes receivable	14,960	19,219
Investment in long-term product supply arrangements	13,657	10,894
Deferred sales commissions	10,442	9,470
Deferred income taxes	8,100	8,481
Other	28,690	20,398
Other long-term assets	$ 240,192	$ 189,593