Schedule of Amounts Recognized in the Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Amounts Recognized in the Consolidated Balance Sheets [Line Items]
Plan assets in other long-term assets	$ 609	$ 359
Current portion of pension benefit obligation in wages and benefits payable	2,581	3,493
Long-term portion of pension benefit obligation	86,310	85,971
Pension benefit obligation, net	$ 88,282	$ 89,105