Long-term Compensation Plans - Stock Options Valuation Assumptions (Details) - $ / shares	12 Months Ended
Dec. 31, 2016	Jan. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value price (in dollars per share)		$ 0.01
Employee Stock Option \| The 2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average expected term	6 years
Expected volatility	53.00%
Expected dividend rate	0.00%
Employee Stock Option \| The 2013 Plan \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate (as a percent)	1.52%
Fair value price (in dollars per share)	$ 4.32
Employee Stock Option \| The 2013 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Risk-free rate (as a percent)	1.56%
Fair value price (in dollars per share)	$ 4.81

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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- Definition

The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

+ References

+ Details

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- Definition

The risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Price of a single share of a number of saleable stocks of a company.

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No definition available.

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- Definition

Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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