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v3.8.0.1

Summary of Significant Accounting Policies - The Company (Details) a in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2017 a segment variable_interest_entity mi | Dec. 31, 2016 variable_interest_entity
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Variable Interest Entity, Number of Entities Consolidated | variable_interest_entity | 1 | 1
Business segments | segment | 5 |
Area of land | a | 270 |
Los Angeles, California |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Distance from city | 60 |
Bakersfield, California |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |
Distance from city | 15 |

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- Details
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- Details
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