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Commitments, Contingencies and Guarantees (Details Textual) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Commitments, Contingencies and Guarantees [Line Items] |  |  |
Estimated Payment for Put Options Upon Termination | $ 130,727 |  |
Investment Commitments | 2,546 |  |
Letters of Credit Outstanding, Amount | 4,884 |  |
Estimated Payments For Put Option Excluding Termination | 17,807 |  |
Estimated Issuance of Share Capital for Purchase of Ownership Interest on Exercise of Put Options | 1,319 |  |
Estimated Aggregate Amount For Put Options | 148,534 |  |
Operating Leases, Rent Expense | 40,111 | 35,909 | 26,521
Operating Leases, Income Statement, Sublease Revenue | 897 | 820 | 555
Future Sublease Income Receivable | $ 6,201 |  |

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- Details
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- Definition The estimated aggregate amount for put options has been recorded as on the reporting period. + References No definition available. + Details
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- Definition Estimated issuance of share capital to purchase ownership interests on exercise of put options. + References No definition available. + Details
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- Definition The estimated payment for put options upon termination has been recorded as on the reporting period. + References No definition available. + Details
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- Definition Estimated payments for put option excluding termination as on the reporting period. + References No definition available. + Details
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- Definition The total future cash expected to be received. + References No definition available. + Details
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- Definition Amount of fund to be committed towards investments. + References No definition available. + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition The amount of revenue recognized for the period under subleasing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6584307&loc=d3e41620-112719 + Details
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