XML 127 R80.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Debt - Additional Information (Detail) $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jun. 30, 2016 USD ($) | Dec. 10, 2012 USD ($) | Jun. 30, 2016 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Nov. 30, 2012 USD ($)
Disclosure Of Borrowings [Line Items] |  |  |  |  |  |
Net Debt to EBITDA ratio |  |  |  | 0.9 | (1.7) |
Revolving credit facility [member] |  |  |  |  |  |
Disclosure Of Borrowings [Line Items] |  |  |  |  |  |
Borrowings |  |  |  |  |  | $ 375,000
Current net leverage ratio |  |  |  | 0.9 |  |
LIBOR interest plus margin |  |  |  | 2.00% |  |
Loan undrawn standby fee |  |  |  | 0.50% |  |
Loan undrawn standby fee paid | $ 2,031 |  |  |  |  |
Prepaid loan cost |  |  |  | $ 1,272 | $ 1,772 |
Revolving credit facility [member] | Amended and restated credit agreement [member] |  |  |  |  |  |
Disclosure Of Borrowings [Line Items] |  |  |  |  |  |
Borrowings | 250,000 |  | $ 250,000 |  |  |
Additional borrowing capacity | $ 100,000 |  | $ 100,000 |  |  |
Borrowings maturity |  |  | Jun. 13, 2020 |  |  |
Aggregate unsecured indebtedness |  |  |  | 850,000 |  |
Secured indebtedness incurred |  |  |  | 200,000 |  |
Unsecured indebtedness |  |  |  | $ 150,000 |  |
Net Debt to EBITDA ratio |  |  |  | 3.5 |  |
Minimum EBITDA to Interest ratio |  |  |  | 3 |  |
Loan undrawn standby fee paid |  |  |  | $ 0 |  |
Senior notes [member] |  |  |  |  |  |
Disclosure Of Borrowings [Line Items] |  |  |  |  |  |
Borrowings maturity |  | Dec. 15, 2020 |  |  |  |
Senior notes issued |  | $ 589,500 |  |  |  |
Notes issued at par value |  | $ 600,000 |  |  |  |
Notes issued coupon rate |  | 6.125% |  |  |  |
Principal amount notes redemption price |  |  |  | At any time prior to December 15, 2016 at a redemption price equal to 100% of the aggregate principal amount of the notes at the treasury yield plus 50 basis points, and any accrued and unpaid interest |  |
Fair market value of notes issued |  |  |  | $ 596,000 |  |
Deferred financing cost |  |  |  | $ 6,217 | $ 8,411 |

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