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Notes Payable, Other and Short-Term Borrowings - Additional Information (Detail) |  |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended |  |  |  |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 23, 2018 USD ($) | Sep. 05, 2018 USD ($) | Jul. 24, 2018 USD ($) | Jul. 19, 2018 USD ($) | Aug. 23, 2017 USD ($) | Aug. 22, 2017 USD ($) | May 27, 2017 | Mar. 31, 2019 USD ($) | Mar. 31, 2018 USD ($) | Dec. 31, 2018 USD ($) | Mar. 31, 2019 BRL (R$) | Dec. 13, 2018 USD ($) | Sep. 08, 2017 USD ($) | Aug. 23, 2017 BRL (R$) | Aug. 22, 2017 BRL (R$) | May 31, 2017 USD ($) | May 27, 2016 USD ($) | Mar. 13, 2015 USD ($) | Dec. 09, 2014 USD ($) | Jun. 26, 2012 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price as percentage of principal amount |  |  |  |  |  |  |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |
Carrying amount of debt component |  |  |  |  |  |  |  | $ 1,013,364,000 |  | $ 768,710,000 |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  | $ 13,198,000 | $ 9,368,000 |  |  |  |  |  |  |  |  |  |  |
Unsecured Credit Agreement September 8, 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of term loan |  |  |  |  |  |  |  |  |  | 195,000,000 |  |  |  |  |  |  |  |  |  |
Line of credit facility, outstanding amount |  |  |  |  |  |  |  |  |  |  |  | $ 0 |  |  |  |  |  |  |  |
Unsecured Credit Agreement September 8, 2017 [Member] | Senior Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum revolving credit |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  |  |  |  |  |  |
Credit agreement maturity date |  |  |  |  |  |  |  | Sep. 08, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Credit Agreement September 8, 2017 [Member] | New Senior Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Credit agreement maturity date |  |  |  |  |  |  |  | Nov. 28, 2020 |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, outstanding amount |  |  |  |  |  |  |  | $ 248,400,000 |  | $ 0 |  |  |  |  |  |  |  |  |  |
Deferred financing costs |  |  |  |  |  |  |  | 1,600,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recorded |  |  |  |  |  |  |  | $ 2,000,000 | 0 |  |  |  |  |  |  |  |  |  |  |
Average interest rate |  |  |  |  |  |  |  | 4.59% |  |  |  |  |  |  |  |  |  |  |  |
5.375% Senior Notes Due 2023 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recorded |  |  |  |  |  |  |  | $ 6,300,000 | 0 |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  | 5.375% |  |  |  |  | 5.375% |  | 5.375% | 5.375% |  |  |  |  |  |  |  |  |
Principal amount of notes |  |  | $ 450,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity year |  |  | 2023 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Redemption price as percentage of principal amount |  |  |  |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |  |
Carrying amount of debt component |  |  | $ 444,200,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issuance costs |  |  | $ 5,800,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, periodic interest payment description |  |  |  |  |  |  |  | payable in cash on January 24 and July 24 of each year, commencing January 24, 2019. The 5.375% Senior Notes due 2023 will mature on July 24, 2023. |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity year |  |  |  |  |  |  |  | Jul. 24, 2023 |  |  |  |  |  |  |  |  |  |  |  |
5.375% Senior Notes Due 2023 [Member] | Level 2 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  | 5.375% |  |  | 5.375% |  |  |  |  |  |  |  |  |
5.125% Senior Notes Due 2021 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recorded |  |  |  |  |  |  |  | $ 4,100,000 | 4,000,000 |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  | 5.125% |  | 5.125% | 5.125% |  |  |  |  |  | 5.125% |  |  |
Principal amount of notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000,000 |  |  |
Debt maturity year |  |  |  |  |  |  | 2021 | 2021 |  |  |  |  |  |  |  |  |  |  |  |
Carrying amount of debt component |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 295,800,000 |  |  |
Debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,200,000 |  |  |
Debt instrument, periodic interest payment description |  |  |  |  |  |  |  | payable in cash on May 27 and November 27 of each year, commencing November 27, 2016 |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity year |  |  |  |  |  |  |  | May 27, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Redemption price as percentage of principal amount |  |  |  |  |  |  |  | 101.00% |  |  |  |  |  |  |  |  |  |  |  |
5.125% Senior Notes Due 2021 [Member] | Level 2 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  | 5.125% |  |  | 5.125% |  |  |  |  |  |  |  |  |
8.125% Senior Notes Due 2042 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recorded |  |  |  |  |  |  |  | $ 0 | 0 |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  | 8.125% |  |  |  |  |  | 8.125% |  | 8.125% | 8.125% |  |  |  |  |  |  |  |  |
Principal amount of notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 112,500,000
Debt maturity year |  | 2042 |  |  |  |  |  | 2042 |  |  |  |  |  |  |  |  |  |  |  |
Earliest call date |  |  |  |  |  |  |  | Jun. 26, 2017 |  |  |  |  |  |  |  |  |  |  |  |
Carrying amount of debt component |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 108,700,000
Debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 3,800,000
Repayments of outstanding borrowings |  | $ 112,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
5.375% Senior Notes Due 2019 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recorded |  |  |  |  |  |  |  | $ 0 | 0 |  |  |  |  |  |  |  |  |  |  |
Stated interest rate | 5.375% |  |  |  |  |  |  | 5.375% |  | 5.375% | 5.375% |  |  |  |  |  |  |  |  |
Principal amount of notes |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 300,000,000 |
Debt maturity year | 2019 |  |  |  |  |  |  | 2019 |  |  |  |  |  |  |  |  |  |  |  |
Carrying amount of debt component |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 295,100,000 |
Debt issuance costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 4,900,000 |
Debt instrument, periodic interest payment description |  |  |  |  |  |  |  | payable in cash on June 9 and December 9 of each year, commencing June 9, 2015. |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity year |  |  |  |  |  |  |  | Dec. 09, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Repayments of outstanding borrowings | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
8.375% Senior Notes Due July 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest expense recorded |  |  |  |  |  |  |  | $ 0 | 5,000,000 |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  | 8.375% |  | 8.375% | 8.375% |  |  |  |  |  |  |  |  |
Principal amount of notes |  |  |  |  |  |  |  | $ 240,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, periodic interest payment description |  |  |  |  |  |  |  | semi-annually |  |  |  |  |  |  |  |  |  |  |  |
Debt maturity date |  |  |  |  |  |  |  | 2018-07 |  |  |  |  |  |  |  |  |  |  |  |
Repayments of outstanding borrowings |  |  |  | $ 240,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
3.70% [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding balance of the secured loan arrangements |  |  |  |  |  |  |  | $ 0 |  | $ 1,800,000 |  |  |  |  |  |  |  |  |  |
3.70% [Member] | Secured Loan Arrangements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.70% |  |
Debt maturity year |  |  |  |  |  |  |  | Mar. 13, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 28,200,000 |  |
Value of the fixed assets pledged |  |  |  |  |  |  |  |  |  | 100,000 |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  | $ 29,000,000 | 100,000 |  |  |  |  |  |  |  |  |  |  |
3.44% [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Outstanding balance of the secured loan arrangements |  |  |  |  |  |  |  | $ 17,300,000 |  | 19,200,000 |  |  |  |  |  |  |  |  |  |
3.44% [Member] | Secured Loan Arrangements [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stated interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3.44% |  |  |  |
Debt maturity year |  |  |  |  |  |  |  | May 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument gross amount |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 29,900,000 |  |  |  |
Value of the fixed assets pledged |  |  |  |  |  |  |  | $ 5,200,000 |  |  |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  |  |  |  |  | 200,000 | 200,000 |  |  |  |  |  |  |  |  |  |  |
Unsecured Loan Agreement [Member] | Short Term Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum revolving credit |  |  |  |  |  | $ 5,100,000 |  |  |  |  |  |  |  |  | R$ 20,000,000 |  |  |  |  |
Credit agreement maturity date |  |  |  |  |  | May 20, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, outstanding amount |  |  |  |  |  |  |  | 5,100,000 |  |  | R$ 20,000,000 |  |  |  |  |  |  |  |  |
Interest expense recorded |  |  |  |  |  |  |  | $ 100,000 | 100,000 |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, description |  |  |  |  |  |  |  | Borrowings under this facility bear interest at the Brazilian Interbank offering rate plus 3.30%. |  |  |  |  |  |  |  |  |  |  |  |
Current interest rate |  |  |  |  |  |  |  | 9.80% |  |  | 9.80% |  |  |  |  |  |  |  |  |
Debt instrument, description of reference rate |  |  |  |  |  |  |  | Brazilian Interbank offering rate |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Loan Agreement [Member] | Brazilian Interbank Offering Rate [Member] | Short Term Loans [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, basis point |  |  |  |  |  | 3.30% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unsecured Credit Agreement [Member] | Intra-Day Overdraft Credit Line [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum revolving credit |  |  |  |  | $ 12,900,000 |  |  |  |  |  |  |  |  | R$ 50,000,000 |  |  |  |  |  |
Credit agreement maturity date |  |  |  |  | Jun. 14, 2019 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, outstanding amount |  |  |  |  |  |  |  | $ 0 |  |  |  | $ 0 |  |  |  |  |  |  |  |
Line of credit facility, fee percentage |  |  |  |  | 1.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Line of credit facility, fee |  |  |  |  |  |  |  | 33,000 | $ 39,000 |  |  |  |  |  |  |  |  |  |  |
Maximum [Member] | Unsecured Credit Agreement September 8, 2017 [Member] | New Senior Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum revolving credit |  |  |  |  |  |  |  |  |  |  |  |  | $ 400,000,000 |  |  |  |  |  |  |
Minimum [Member] | Unsecured Credit Agreement September 8, 2017 [Member] | New Senior Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum revolving credit |  |  |  |  |  |  |  | $ 350,000,000 |  |  |  |  |  |  |  |  |  |  |  |
Newmark [Member] | Unsecured Credit Agreement September 8, 2017 [Member] | Senior Revolving Credit Agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from notes payable |  |  |  |  |  |  |  |  |  | $ 195,000,000 |  |  |  |  |  |  |  |  |  |
Newmark [Member] | 8.125% Senior Notes Due 2042 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of outstanding borrowings |  | $ 112,500,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Newmark [Member] | 5.375% Senior Notes Due 2019 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of outstanding borrowings | $ 300,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
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