Recent Accounting Pronouncements (Schedule of the Impact for the Adoption of ASU 842) (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
ASSETS
Other assets	$ 90,943	$ 93,796	$ 50,523
LIABILITIES
Accrued expenses and other current liabilities	188,373	185,894	174,325
Other Long-term Liabilities	186,965	183,343	$ 151,639
Accounting Standards Update 2016-02 [Member]
ASSETS
Other assets		43,300
Accounting Standards Update 2016-02 [Member] | Balance Without Adoption Of ASC 842 [Member]
ASSETS
Other assets	49,823
LIABILITIES
Accrued expenses and other current liabilities	177,298
Other Long-term Liabilities	156,920
Accounting Standards Update 2016-02 [Member] | Reclassification [Member]
ASSETS
Other assets	41,120	43,273
LIABILITIES
Accrued expenses and other current liabilities	11,075	11,569
Other Long-term Liabilities	$ 30,045	$ 31,704