Discontinued Operations And Assets Held For Sale (Schedule of Assets Held for Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale	$ 128,083	$ 0
Conwed [Member] | Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash	5,206
Receivables	15,297
Property, equipment and leasehold improvements, net	18,664
Intangible assets, net and goodwill	56,854
Inventory	19,069
Other assets	12,993
Assets held for sale	$ 128,083