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Stockholders' Equity - Restricted Stock Activity (Details) - Restricted Stock [Member]	12 Months Ended
	Dec. 31, 2019 $ / shares shares
Number of Restricted Shares
Outstanding at January 1, 2018 | shares	1,460,210
Granted | shares	60,000
Vested | shares	(289,587)
Outstanding at December 31, 2018 | shares	1,230,623
Weighted Average Grant Date Fair Value
Outstanding at January 1, 2018 | $ / shares	$ 4.82
Granted | $ / shares	1.70
Vested | $ / shares	6.26
Outstanding at December 31, 2018 | $ / shares	$ 4.33

X

- Definition

Net number of non-option equity instruments granted to participants.

+ 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)(iv)(1)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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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

The weighted average fair value at grant date for non option equity-based awards issued during the period.

+ References

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- Definition

Number of restricted shares that vested and have been issued from an equity-based plan.

+ References

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- Definition

Number of shares reserved for issuance under restricted stock equity instrument agreements awarded that validly exist and are outstanding.

+ References

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- Definition

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+ References

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- Definition

The weighted average fair value of non option awards on equity-based plans excluding option plans

+ References

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