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Commitments, Contingencies and Guarantees - Textual (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Temporary Equity [Line Items] |  |  |
Redeemable Noncontrolling Interest, Equity, Redemption Value | $ 60,180,000 | $ 69,471,000 |
Letters of credit outstanding, amount | 4,360,000 |  |
Operating leases, rent expense | 56,725,000 | 47,583,000 | $ 42,657,000
Operating leases, income statement, sublease revenue | 3,027,000 | $ 1,739,000 | $ 1,449,000
Future sublease income receivable | 11,599,000 |  |
Contractual redemption right [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Redeemable Noncontrolling Interest, Equity, Redemption Value | 12,510,000 |  |
Termination or Death Redemption Right [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Redeemable Noncontrolling Interest, Equity, Redemption Value | 43,085,000 |  |
Excess Initial Redemption Value [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Redeemable Noncontrolling Interest, Equity, Redemption Value | 4,585,000 |  |
Common Class A | Contractual redemption right [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Redeemable Noncontrolling Interest, Equity, Redemption Value | 124,000 |  |
Investments [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Investment commitments | $ 738,000 |  |
Minimum [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Redeemable noncontrolling interest obligation, year of payment | 2017 |  |
Maximum |  |  |
Temporary Equity [Line Items] |  |  |
Redeemable noncontrolling interest obligation, year of payment | 2023 |  |
SEC Investigation [Member] |  |  |
Temporary Equity [Line Items] |  |  |
Civil penalty | $ 1,500 |  |

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- Definition Civil penalty + References No definition available. + Details
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- Definition Redeemable noncontrolling interest obligation, year of payment + References No definition available. + Details
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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 Contractually required future rental payments receivable on noncancelable subleasing arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77902758&loc=d3e41502-112717 + 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=77891322&loc=d3e41620-112719 + Details
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- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
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- Definition Redemption value, as if currently redeemable, of redeemable noncontrolling interest classified as temporary equity and the election has been made to accrete changes in redemption value to the earliest redemption date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 24(b) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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