Taxes on Income (Tax Benefits) - Effective Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Loss Carryforwards [Line Items]
Income taxes at U.S. federal statutory tax rate	$ 425	$ (12,591)	$ 20,651
State income taxes, net of federal income tax benefit	(94)	(3,073)	64
Divestitures	2,269	0	0
Meals and entertainment	761	863	1,034
Changes in taxes previously accrued	(489)	(1,932)	(3,098)
Foreign tax rate differences	(1,468)	(9,215)	(4,892)
Goodwill impairment	3,485	9,690	0
Recognition of uncertain tax positions	24	(96)	(89)
Settlement of escrow arrangement	(1,115)	0	0
Contingent consideration reversal	0	0	(1,461)
Domestic Production Activities deduction	(528)	(81)	(1,548)
Incremental U.S. taxes on undistributed foreign earnings	2,102	0	0
Other matters	(245)	(396)	(69)
Total tax provision	$ 9,205	$ (3,840)	$ 12,154
Effective tax rate	757.60%	10.70%	20.60%
Foreign Tax Authority
Operating Loss Carryforwards [Line Items]
Change in the balance of the valuation allowance for deferred tax assets allocated to income tax expense	$ (756)	$ 7,785	$ 1,447
State and Local Jurisdiction
Operating Loss Carryforwards [Line Items]
Change in the balance of the valuation allowance for deferred tax assets allocated to income tax expense	$ 4,834	$ 5,206	$ 115