Segment Information (Equity in (earnings) loss of unconsolidated entities) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Equity in (earnings) loss of unconsolidated entities:
Equity in earnings of unconsolidated entities	$ (2,690)	$ 1,985	$ (8,337)

- Definition

This item represents the entity's proportionate share for the period of the net income (loss) of its investee (such as unconsolidated subsidiaries and joint ventures) to which the equity method of accounting is applied. This item includes income or expense related to stock-based compensation based on the investor's grant of stock to employees of an equity method investee.

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