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Assets, Liabilities and Temporary Equity Measured at Fair Value on Recurring Basis (Detail) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Assets |  |
Investments in mutual funds and common stock | $ 115,893 | $ 107,050
Liabilities |  |
Contingent earn-out obligations | 11,674 | $ 9,977
Fair Value, Measurements, Recurring |  |
Assets |  |
Investments in mutual funds and common stock | 53,209 |
Cash surrender value of life insurance policies | 62,684 |
Funds on deposit with third parties | 75,671 |
Liabilities |  |
Contingent earn-out obligations | 11,674 |
Temporary equity |  |
Noncontrolling interests subject to put provisions | 1,009,704 |
Fair Value, Measurements, Recurring | Interest rate cap agreements |  |
Assets |  |
Interest rate cap agreements | 1,743 |
Fair Value, Measurements, Recurring | Level 1 |  |
Assets |  |
Investments in mutual funds and common stock | 53,209 |
Cash surrender value of life insurance policies | 0 |
Funds on deposit with third parties | 75,671 |
Liabilities |  |
Contingent earn-out obligations | 0 |
Temporary equity |  |
Noncontrolling interests subject to put provisions | 0 |
Fair Value, Measurements, Recurring | Level 1 | Interest rate cap agreements |  |
Assets |  |
Interest rate cap agreements | 0 |
Fair Value, Measurements, Recurring | Level 2 |  |
Assets |  |
Investments in mutual funds and common stock | 0 |
Cash surrender value of life insurance policies | 62,684 |
Funds on deposit with third parties | 0 |
Liabilities |  |
Contingent earn-out obligations | 0 |
Temporary equity |  |
Noncontrolling interests subject to put provisions | 0 |
Fair Value, Measurements, Recurring | Level 2 | Interest rate cap agreements |  |
Assets |  |
Interest rate cap agreements | 1,743 |
Fair Value, Measurements, Recurring | Level 3 |  |
Assets |  |
Investments in mutual funds and common stock | 0 |
Cash surrender value of life insurance policies | 0 |
Funds on deposit with third parties | 0 |
Liabilities |  |
Contingent earn-out obligations | 11,674 |
Temporary equity |  |
Noncontrolling interests subject to put provisions | 1,009,704 |
Fair Value, Measurements, Recurring | Level 3 | Interest rate cap agreements |  |
Assets |  |
Interest rate cap agreements | $ 0 |

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
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- Definition Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Surrender Value -URI http://asc.fasb.org/extlink&oid=6507153 + Details
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- Definition The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity. + 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 14 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph 15 -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (16)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 480 -SubTopic 10 -Section S99 -Paragraph 3A -Subparagraph (12)(c) -URI http://asc.fasb.org/extlink&oid=65877616&loc=SL6540498-122764 + Details
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