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Debt - Schedule of Ratio of Net Indebtedness (Details) - 6 months ended Jun. 30, 2015 | Total
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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%
Less than 4.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Line Of Credit Facility Leverage Rate Description | Less than 4.00 to 1.00
Line of credit facility applicable margin rate | 1.75%
Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Line Of Credit Facility Leverage Rate Description | Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00
Line of credit facility applicable margin rate | 1.90%
Greater than or equal to 5.00 to 1.00 but less than 5.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Line Of Credit Facility Leverage Rate Description | Greater than or equal to 5.00 to 1.00 but less than 5.50 to 1.00
Line of credit facility applicable margin rate | 2.10%
Greater than or equal to 5.50 to 1.00 but less than 6.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Line Of Credit Facility Leverage Rate Description | Greater than or equal to 5.50 to 1.00 but less than 6.00 to 1.00
Line of credit facility applicable margin rate | 2.20%
Greater than or equal to 6.00 to 1.00 but less than 6.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Line Of Credit Facility Leverage Rate Description | Greater than or equal to 6.00 to 1.00 but less than 6.50 to 1.00
Line of credit facility applicable margin rate | 2.50%
Greater than or equal to 6.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Line Of Credit Facility Leverage Rate Description | Greater than or equal to 6.50 to 1.00
Line of credit facility applicable margin rate | 2.75%
Minimum [Member] |
Line Of Credit Facility Leverage Range [Line Items] |
Line of credit facility, unused capacity, commitment fee (as a percent) | 0.35%
Minimum [Member] | Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 4.00
Minimum [Member] | Greater than or equal to 5.00 to 1.00 but less than 5.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 5.00
Minimum [Member] | Greater than or equal to 5.50 to 1.00 but less than 6.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 5.50
Minimum [Member] | Greater than or equal to 6.00 to 1.00 but less than 6.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 6.00
Minimum [Member] | Greater than or equal to 6.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 6.50
Maximum [Member] |
Line Of Credit Facility Leverage Range [Line Items] |
Line of credit facility, unused capacity, commitment fee (as a percent) | 0.25%
Maximum [Member] | Less than 4.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 4.00
Maximum [Member] | Greater than or equal to 4.00 to 1.00 but less than 5.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 5.00
Maximum [Member] | Greater than or equal to 5.00 to 1.00 but less than 5.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 5.50
Maximum [Member] | Greater than or equal to 5.50 to 1.00 but less than 6.00 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 6.00
Maximum [Member] | Greater than or equal to 6.00 to 1.00 but less than 6.50 to 1.00 [Member] |
Summary of leverage and applicable margin |
Ratio of net indebtedness to EBITDA (as a percent) | 6.50

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