Equity Method Investments - Operating Results (Details) - ICP - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2017
ICP’s Operating results:
Net sales	$ 39,677	$ 78,062
Cost of sales and expenses	42,410	79,224
Net loss	$ (2,733)	$ (1,162)

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The amount of the cost of sales reported by an equity method investment of the entity.

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The amount of net income (loss) reported by an equity method investment of the entity.

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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.

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