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Other Operating Income, net (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Other Income and Expenses [Abstract]
Gain on sale of operating assets	$ 5	$ 113	$ 1
Frozen defined-benefit pension plan income			1,611
Total other operating income, net	$ 5	$ 113	$ 1,612

X

- Definition

Defined Benefit Pension Plan Expense Income

+ References

No definition available.

+ Details

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Balance Type:	debit
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- Definition

Amount of gain (loss) on sale or disposal of other assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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- References

No definition available.

+ Details

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X

- Definition

The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations.

+ References

No definition available.

+ Details

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