Stock-Based Compensation Plans - Summary of Stock Option Activity (Details) - Employee Stock Option [Member]	9 Months Ended
Sep. 30, 2019 $ / shares shares
Number of Options
Outstanding, Beginning Balance \| shares	1,546,521
Granted \| shares	0
Exercised \| shares	0
Expired or Forfeited \| shares	(169,430)
Outstanding, Ending Balance \| shares	1,377,091
Weighted Average Exercise Price
Outstanding, Beginning Balance \| $ / shares	$ 5.11
Granted \| $ / shares	0
Exercised \| $ / shares	0
Expired or Forfeited \| $ / shares	5.59
Outstanding, Ending Balance \| $ / shares	$ 6.32

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Net number of share options (or share units) granted during the period.

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Number of options outstanding, including both vested and non-vested options.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

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No definition available.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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- Definition

Number of share options (or share units) exercised during the current period.

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Share-based Compensation Arrangement by Share-based Payment Award, Options, Weighted Average Exercise Price [Abstract]

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