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Fair Value Measurements - Fair Value Assumption Inputs (Details) - USD ($) $ in Millions | 9 Months Ended |
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Apr. 30, 2015
Canadian Operations |  |  |
Fair value measurement of assets and liabilities |  |  |
Settlement amount for outstanding note receivable |  |  | $ 5.1
Impaired long-lived assets |  |  |
Fair value measurement of assets and liabilities |  |  |
Weighted average disposal period of impaired assets | 4 years | 4 years |
Discount rate (as a percent) | 10.00% | 9.00% |

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- Definition Represents the settlement amount of long-term receivable from sale of discontinued operations. + References No definition available. + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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