Schedule II - Valuation and Qualifying Accounts (Details 1) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]
Allowance, Beginning Balance	$ 15,856	$ 18,873	$ 24,936
Additions charged to income tax expense	1,043	1,049	473
Additions (reductions) charged to other comprehensive income	(59)	(30)	(547)
Reductions credited to income tax expense	(1,216)	(2,303)	(1,412)
Changes due to foreign currency translation	(2,204)	(1,733)	(849)
Divestiture			(3,728)
Acquisition	981
Allowance, Ending Balance	$ 14,401	$ 15,856	$ 18,873