Stock-based Compensation - Options Outstanding and Exercisable (Details) - 2008 LTIP - Stock Options	3 Months Ended
Mar. 31, 2019 $ / shares shares
Outstanding
Number Outstanding \| shares	455,000
Weighted Average Remaining Contractual Life	6 years 9 months 29 days
Weighted Average Exercise Price \| $ / shares	$ 1.67
Exercisable
Number Outstanding \| shares	185,000
Weighted Average Exercise Price \| $ / shares	$ 1.74
Grant Date January 21, 2010
Outstanding
Number Outstanding \| shares	5,000
Weighted Average Remaining Contractual Life	9 months 22 days
Weighted Average Exercise Price \| $ / shares	$ 6.00
Exercisable
Number Outstanding \| shares	5,000
Weighted Average Exercise Price \| $ / shares	$ 6.00
Grant Date February 24, 2016
Outstanding
Number Outstanding \| shares	450,000
Weighted Average Remaining Contractual Life	6 years 10 months 24 days
Weighted Average Exercise Price \| $ / shares	$ 1.62
Exercisable
Number Outstanding \| shares	180,000
Weighted Average Exercise Price \| $ / shares	$ 1.62

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

+ References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 718
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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.

+ References

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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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-Publisher FASB
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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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