Fair Value Measurement - Fair Value of Assets (Liabilities) Not Measured at Fair Value In Consolidated Balance Sheets (Details) - USD ($)
$ in Thousands

Sep. 30, 2017

Dec. 31, 2016

[1]

The fair value of fixed-rate long-term debt is estimated using the present value of underlying cash flows discounted at a current market yield for similar instruments. The carrying amount of fixed-rate long-term debt was $265.0 million and $350.0 million at September 30, 2017 and December 31, 2016, respectively.

[2]

The Perfect Home Notes are carried at cost, which approximates fair value. The Company periodically reviews the carrying amount utilizing company-specific transactions or changes in Perfect Home’s financial performance to determine if the Notes are impaired. As of September 30, 2017, the Company considered the fair value of the Note's secured assets in determining if the Notes are impaired. The fair value of the secured assets is determined based on the present value of the estimated future net cash inflows of the Perfect Home assets that are pledged as security interest on the Notes. Perfect Home's outstanding loans receivable portfolio has continued to decline since June 30, 2017, which resulted in the present value of estimated future cash flows of the assets, in which the Company has a subordinated security interest, to approximate 120% of the balance owned to the Company under the Notes as of September 30, 2017. The Company expects Perfect Home's loan receivable portfolio to continue to decline, due to lack of new loan originations, until Perfect Home is able to obtain additional financing. If Perfect Home is unable to access additional capital and fails to execute on its business strategy, there could be a change in the valuation of the Notes that may result in an impairment loss in future periods.