Pension and Other Postretirement Benefit Plans (Fair values of the plans assets) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Financial instruments with significant Level 3 inputs
Foreign currency translation adjustment		$ 1,574	$ (10,445)	$ 2,428
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		39,002	40,368	$ 43,145
Financial instruments with significant Level 3 inputs
Beginning balance, December 31, 2014		16,049
Total unrealized gains included in net gain	[1]	869
Foreign currency translation adjustment		(1)
Ending balance, December 31, 2015		16,917	16,049
Foreign Plan [Member] | Held in Swiss Franc, Euro and USD [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		808	973
Foreign Plan [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		12,292	14,481
Foreign Plan [Member] | Real estate investment funds
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		16,917	16,049
Foreign Plan [Member] | Fixed income / Bond securities:
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		8,949	8,839
Foreign Plan [Member] | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		36	26
Foreign Plan [Member] | Active Market Prices (Level 1)
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		21,060	24,293
Foreign Plan [Member] | Active Market Prices (Level 1) | Held in Swiss Franc, Euro and USD [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		808	973
Foreign Plan [Member] | Active Market Prices (Level 1) | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		11,303	14,481
Foreign Plan [Member] | Active Market Prices (Level 1) | Real estate investment funds
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Active Market Prices (Level 1) | Fixed income / Bond securities:
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		8,949	8,839
Foreign Plan [Member] | Active Market Prices (Level 1) | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Significant Observable Inputs (Level 2)
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		1,025	26
Foreign Plan [Member] | Significant Observable Inputs (Level 2) | Held in Swiss Franc, Euro and USD [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Significant Observable Inputs (Level 2) | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		989	0
Foreign Plan [Member] | Significant Observable Inputs (Level 2) | Real estate investment funds
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Significant Observable Inputs (Level 2) | Fixed income / Bond securities:
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Significant Observable Inputs (Level 2) | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		36	26
Foreign Plan [Member] | Significant Unobservable Inputs (Level 3)
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		16,917	16,049
Foreign Plan [Member] | Significant Unobservable Inputs (Level 3) | Held in Swiss Franc, Euro and USD [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Significant Unobservable Inputs (Level 3) | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Significant Unobservable Inputs (Level 3) | Real estate investment funds
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		16,917	16,049
Foreign Plan [Member] | Significant Unobservable Inputs (Level 3) | Fixed income / Bond securities:
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		0	0
Foreign Plan [Member] | Significant Unobservable Inputs (Level 3) | Other [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets of pension plan		$ 0	$ 0

[1] Total unrealized gains are reported as a component of the pension adjustment in accumulated other comprehensive income in the consolidated statement of stockholders’ equity.