v2.4.1.9

Intangible Assets Summary of Intangible Asset Account Activity (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013
Finite-Lived Intangible Assets [Line Items] |  |
Beginning balance, intangible assets, gross | $ 804,281 us-gaap_IntangibleAssetsGrossExcludingGoodwill | $ 802,540 us-gaap_IntangibleAssetsGrossExcludingGoodwill
Intangible assets acquired | 1,453 us-gaap_FinitelivedIntangibleAssetsAcquired1 | (1,500)us-gaap_FinitelivedIntangibleAssetsAcquired1
Effect of change in exchange rates | (57,586)us-gaap_FiniteLivedIntangibleAssetsTranslationAdjustments | 3,241 us-gaap_FiniteLivedIntangibleAssetsTranslationAdjustments
Ending balance, intangible assets, gross | $ 748,148 us-gaap_IntangibleAssetsGrossExcludingGoodwill | $ 804,281 us-gaap_IntangibleAssetsGrossExcludingGoodwill

X
- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
Name: | us-gaap_FinitelivedIntangibleAssetsAcquired1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of increase (decrease) to assets, excluding financial assets and goodwill, lacking physical substance with a finite life for foreign currency translation adjustments. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsTranslationAdjustments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before accumulated amortization of intangible assets, excluding goodwill. + References No definition available. + Details
Name: | us-gaap_IntangibleAssetsGrossExcludingGoodwill
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant