Taxes on Income (Tax Benefits) - Narrative (Details) - USD ($) $ in Thousands		12 Months Ended
	Feb. 18, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Deferred Tax Assets, Operating Loss Carryforwards		$ 14,688	$ 19,355
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration		8,100
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration		6,600
Deferred Tax Assets, Valuation Allowance		18,897	19,353
Undistributed Earnings of Foreign Subsidiaries		229,400
Lapse in statute of limitations		218	252	$ 236
Income tax penalties and interest expense		300	$ 300	$ 300
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		500
Subsequent Event | UGSI
Business Acquisition [Line Items]
Foreign earnings repatriated, tax impact	$ 3,500
Foreign earnings repatriated	$ 30,400
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration		$ 400