Recent Accounting Pronouncements (Schedule of the Impact for the Adoption of ASU 842) (Details) - USD ($) $ in Thousands		Mar. 31, 2019		Jan. 01, 2019	Dec. 31, 2018	[2]
ASSETS
Other assets	[1]	$ 91,804		$ 93,796	$ 50,523
LIABILITIES
Accrued expenses and other current liabilities		173,827	[1]	185,894	174,325
Other Long-term Liabilities	[1]	184,999		183,343	$ 151,639
Accounting Standards Update 2016-02 [Member] | Previously Reported [Member]
ASSETS
Other assets	[1]	49,916
LIABILITIES
Accrued expenses and other current liabilities	[1]	162,383
Other Long-term Liabilities	[1]	154,555
Accounting Standards Update 2016-02 [Member] | Reclassification [Member]
ASSETS
Other assets	[1]	41,888		43,273
LIABILITIES
Accrued expenses and other current liabilities		11,444	[1]	11,569
Other Long-term Liabilities	[1]	$ 30,444		$ 31,704

[1] Prior to the adoption of ASC 842, operating lease ROU assets and current and long-term operating lease liabilities were not recorded on the Condensed Consolidated Balance Sheets.

[2] Balance as previously reported on the Company's Annual Report on Form 10-K for the year ended December 31, 2018.