Investments in Affiliated Companies - Summarized Income Statement (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2018 |
Jun. 30, 2017 |
Jun. 30, 2018 |
Jun. 30, 2017 |
|
| Equity Method Investment, Summarized Financial Information | ||||
| Net sales | $ 108,898 | $ 68,732 | $ 197,474 | $ 141,787 |
| Gross profit | 40,669 | 29,661 | 76,191 | 58,586 |
| Operating income | 31,622 | 19,112 | 57,663 | 37,695 |
| Net income | $ 30,638 | $ 20,809 | $ 57,660 | $ 39,844 |
| X | ||||||||||
- Definition The amount of gross profit (loss) reported by an equity method investment of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of income (loss) from continuing operations reported by an equity method investee. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- References No definition available.
|
| X | ||||||||||
- Definition The amount of net income (loss) reported by an equity method investment of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition The amount of revenue from sale of goods and services reduced by sales returns, allowances, and discounts reported by an equity method investment of the entity. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|