Annual report pursuant to Section 13 and 15(d)

Other Long-Term Liabilites (Narrative) (Details)

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Other Long-Term Liabilites (Narrative) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Other long-term liabilities $ 2,042 $ 2,142  
Defined benefit pension plan liability 1,689 2,131  
Insurance settlements receivable 1,689 2,131  
Net periodic pension costs 526 832 $ 691
Cash contributions to defined benefit pension plan 263 416 $ 345
Switzerland [Member]      
Defined benefit pension plan assets $ 2,849 $ 2,778