Other Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Other Liabilities [Abstract]
Deferred tax liabilities	$ 643	$ 16,177
Reserve for other tax liabilities	6,264	9,463
Reserve for customs assessment	0	3,600
Liability for deferred compensation plan	36,730	33,456
Pension plan benefits reserve	5,631	4,859
Build to suit - financing obligation	9,543	10,238
Deferred rent and deferred tenant incentives	5,952	6,336
Asset retirement obligation	5,682	4,682
Other	6,354	2,069
Total other liabilities	$ 76,799	$ 90,880