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Variable Interest Entities (VIEs) - Schedule of Maximum Exposure to Loss (Detail) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Investments in unconsolidated subsidiaries | $ 233,889 | $ 238,001
Co-investment commitments | 36,500 |
Other current assets | 265,268 | 227,421
Non-Consolidated Variable Interest Entities [Member] |  |
Variable Interest Entity [Line Items] |  |
Investments in unconsolidated subsidiaries | 25,160 | 26,273
Co-investment commitments | 4,266 | 2,364
Other current assets | 3,475 | 3,401
Maximum exposure to loss | $ 32,901 | $ 32,038

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- Definition The reporting entity's aggregate commitments to fund future co-investments with its clients in certain real estate investments. + References No definition available. + Details
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- Definition The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5747-111685 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph b -URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5728-111685 + Details
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