Taxes on Income (Tax Benefits) - Net Deferred Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Deferred income tax assets:
Foreign tax credit carryforwards	$ 3,426	$ 358
Net operating loss carryforwards	26,212	14,688
Accrued expenses	17,366	24,449
Other	8,701	8,285
Total gross deferred income tax assets	55,705	47,780
Less valuation allowance	(15,428)	(18,897)
Net deferred income tax assets	40,277	28,883
Deferred income tax liabilities:
Property, plant and equipment	(12,627)	(11,438)
Intangible assets	(28,346)	(14,525)
Undistributed foreign earnings	(7,051)	(9,153)
Other	(9,237)	(8,248)
Total deferred income tax liabilities	(57,261)	(43,364)
Net deferred income tax liabilities	$ (16,984)	$ (14,481)