Fair Value Measurement - Fair Value of Assets (Liabilities) Not Measured at Fair Value In Consolidated Balance Sheets (Details) - USD ($) $ in Thousands		Mar. 31, 2017	Dec. 31, 2016
Level 1 | Debt Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	[1]	$ 0	$ 0
Level 1 | Long-term Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt, fair value	[2]	0	0
Level 2 | Debt Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	[1]	0	0
Level 2 | Long-term Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt, fair value	[2]	(366,922)	(368,408)
Level 3 | Debt Securities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	[1]	21,439	20,519
Level 3 | Long-term Debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt, fair value	[2]	$ 0	$ 0

[1] 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.

[2] 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 $350.0 million at March 31, 2017 and December 31, 2016, respectively.