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Debt - Schedule of Ratio of Net Indebtedness (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 USD ($) | Jun. 30, 2016 USD ($)
Line Of Credit Facility Leverage Range [Line Items] |  |
Percent of unused portion line of credit facility triggering lower commitment fee (as a percent) |  | 50.00%
Minimum |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Line of credit facility, unused capacity, commitment fee (as a percent) |  | 0.20%
Maximum |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Line of credit facility, unused capacity, commitment fee (as a percent) |  | 0.30%
Senior Unsecured Term Loan | Minimum | Greater than 35% but less than or equal to 45% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.35
Senior Unsecured Term Loan | Minimum | Greater than 45% but less than or equal to 50% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.45
Senior Unsecured Term Loan | Minimum | Greater than 50% but less than or equal to 55% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.5
Senior Unsecured Term Loan | Minimum | Greater than 55% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.55
Senior Unsecured Term Loan | Maximum | Less than or equal to 35% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.35
Senior Unsecured Term Loan | Maximum | Greater than 35% but less than or equal to 45% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.45
Senior Unsecured Term Loan | Maximum | Greater than 45% but less than or equal to 50% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.5
Senior Unsecured Term Loan | Maximum | Greater than 50% but less than or equal to 55% |  |
Summary of leverage and applicable margin |  |
Ratio of net indebtedness to EBITDA (as a percent) |  | 0.55
Senior Unsecured Term Loan | LIBOR |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.45%
Interest incurred on the facility | $ 0.3 | $ 0.3
Senior Unsecured Term Loan | LIBOR | Less than or equal to 35% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.45%
Senior Unsecured Term Loan | LIBOR | Greater than 35% but less than or equal to 45% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.60%
Senior Unsecured Term Loan | LIBOR | Greater than 45% but less than or equal to 50% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.75%
Senior Unsecured Term Loan | LIBOR | Greater than 50% but less than or equal to 55% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.95%
Senior Unsecured Term Loan | LIBOR | Greater than 55% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 2.20%
Line Of Credit Facility Covenant Actual Results |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Maximum leverage ratio (as a percent) | 0.239 | 0.239
Senior unsecured credit facility | LIBOR |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate | 1.50% | 1.50%
Senior unsecured credit facility | LIBOR | Less than or equal to 35% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.50%
Senior unsecured credit facility | LIBOR | Greater than 35% but less than or equal to 45% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.65%
Senior unsecured credit facility | LIBOR | Greater than 45% but less than or equal to 50% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.80%
Senior unsecured credit facility | LIBOR | Greater than 50% but less than or equal to 55% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 2.00%
Senior unsecured credit facility | LIBOR | Greater than 55% |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 2.25%
Senior unsecured credit facility | LIBOR | Minimum |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 1.75%
Senior unsecured credit facility | LIBOR | Maximum |  |
Line Of Credit Facility Leverage Range [Line Items] |  |
Basis spread on variable rate |  | 2.75%

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