Income Taxes (Deferred Income Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Current deferred tax assets:
Accrued expenses			$ 13,217
Unrealized loss on foreign currency			342
Valuaton allowance			(7,008)
Total current deferred tax assets	[1]		6,551
Current deferred tax liabilities:
Unremitted earnings of foreign subsidiary			(14,186)
Other			(44)
Total current deferred tax liabilities	[1]		(14,230)
Non-current deferred tax assets:
Stock compensation expense		$ 7,142	9,760
Long-term accrued expesnes		26,114	6,773
Net operating loss and charitable contributions carryovers		22,518	20,047
Intangible assets		4,725	1,517
Property and equipment			12,097
Future uncertain tax position offset		456	445
Unrealized loss on foreign currency		466
Foreign tax credit		27,109	6,259
Other		5,548	1,207
Valuation allowance		(56,572)	(40,273)
Total non-current deferred tax assets		37,506	$ 17,832
Non-current deferred tax liabilities:
Unremitted earnings of foreign subsidiary		(24,572)
Property and equipment		(6,432)
Total non-current gross deferred tax liabilities		$ (31,004)

[1] In November 2015, the FASB issued guidance to simplify the financial statement presentation of deferred income taxes. The new guidance requires an entity to present deferred tax assets and liabilities as non-current in a classified balance sheet. Prior to the issuance of this guidance, deferred tax liabilities and assets were required to be separately classified into a current amount and a non-current amount in the balance sheet. The new guidance represents a change in accounting principle and is effective for annual reporting periods beginning after December 15, 2016, with early adoption permitted. The Company elected to early adopt this guidance as of December 31, 2015 and to apply it prospectively. Prior period information was not adjusted. Because the application of this guidance affects the balance sheet classification only, adoption of this guidance did not have a material impact on our consolidated financial statements.