Disposition (Major Classes of Assets Disposed) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Assets
Accounts receivable, net	$ 16,236	$ 15,746
Inventories	21,353	19,955
Property, plant and equipment, net	4,140	4,296
Amortizable intangibles, net	15,960	17,471
Goodwill	39,969	38,032	$ 40,357
Liabilities
Accounts payable and accrued expeneses	$ 5,404	6,196
AHN
Assets
Accounts receivable, net		279
Inventories		438
Property, plant and equipment, net		919
Amortizable intangibles, net		196
Goodwill		484
Liabilities
Accounts payable and accrued expeneses		$ 245