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Pension and Other Benefits (Details) - Schedule of Allocation of Plan Assets	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Equity Securities
% of Plan Assets	100.00%	100.00%
Weighted Average Expected Long-Term Rate of Return	5.50%	5.50%	5.50%
Domestic Equity Securities [Member]
Equity Securities
Target Allocation	43.00%
% of Plan Assets	44.00%	47.00%
Weighted Average Expected Long-Term Rate of Return	3.40%
International Equity Securities [Member]
Equity Securities
Target Allocation	7.00%
% of Plan Assets	8.00%	15.00%
Weighted Average Expected Long-Term Rate of Return	0.60%
Debt And Fixed Income Securities [Member]
Equity Securities
Target Allocation	49.00%
% of Plan Assets	47.00%	36.00%
Weighted Average Expected Long-Term Rate of Return	1.50%
Cash And Other Alternative Investments [Member]
Equity Securities
Target Allocation	1.00%
% of Plan Assets	1.00%	2.00%
Weighted Average Expected Long-Term Rate of Return	0.00%

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- References

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- Definition

An assumption as to the rate of return on plan assets reflecting the average rate of earnings expected on the funds invested or to be invested to provide for the benefits included in the benefit obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Expected Long-Term Rate of Return on Plan Assets
-URI http://asc.fasb.org/extlink&oid=6512046

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (k)(3)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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- Definition

Target allocation of investments of this type to total plan assets presented on a weighted average basis.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)(i)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(i)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e2446-114920

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-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=65897934&loc=d3e1928-114920

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