Stock Based Compensation - Options Outstanding (Details)	9 Months Ended
Sep. 30, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding Number of Shares Underlying Options, Beginning ( in shares) \| shares	1,202,000
Outstanding Number of Shares Underlying Options, Expired (in shares) \| shares	(9,000)
Outstanding Number of Shares Underlying Options, Forfeited (in shares) \| shares	(10,000)
Outstanding Number of Shares Underlying Options, Ending (in shares) \| shares	1,183,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Outstanding Weighted Average Exercise Price, Beginning (in dollars per share) \| $ / shares	$ 1.99
Outstanding Weighted Average Exercise Price, Expired (in dollars per share) \| $ / shares	2.28
Outstanding Weighted Average Exercise Price, Forfeited (in dollars per share) \| $ / shares	1.66
Outstanding Weighted Average Exercise Price, Ending (in dollars per share) \| $ / shares	$ 1.99
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable [Abstract]
Exercisable Number of Shares Underlying Options, Beginning (in shares) \| shares	1,202,000
Exercisable Number of Shares Underlying Options, Ending (in shares) \| shares	1,183,000
Exercisable Weighted Average Exercise Price, Beginning (in dollars per share) \| $ / shares	$ 1.99
Exercisable Weighted Average Exercise Price, Ending (in dollars per share) \| $ / shares	$ 1.99

No definition available.

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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

For presentations that combine terminations, 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 or that expired.

+ 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
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-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Weighted average price of options that were either forfeited or expired.

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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)(iv)(3)-(4)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

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.

+ 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
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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
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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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No definition available.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock 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
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-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

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

+ References

No definition available.

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