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Shareholders' Equity - Summary of Warrant Activities (Details) - Warrants [Member] - $ / shares	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Warrants Outstanding, beginning balance	72,000	132,000
Warrants Granted
Warrants Exercised
Warrants Forfeited	(72,000)	(60,000)
Warrants Outstanding, ending balance		72,000
Warrants Exercisable
Weighted Average Exercise Price Per Share Outstanding, beginning balance	$ 20.00	$ 33.64
Weighted Average Exercise Price Per Share Granted
Weighted Average Exercise Price Per Share Exercised
Weighted Average Exercise Price Per Share Forfeited
Weighted average exercise price per share outstanding, ending balance		$ 20.00
Weighted average exercise price per share exercisable
Weighted Average Remaining Contractual Life (in years) Outstanding, beginning balance	10 months 14 days	2 years 2 months 5 days
Weighted average remaining contractual life (in years) Outstanding, ending balance	0 years	10 months 14 days
Weighted average remaining contractual life (in years) exercisable	0 years

X

- Definition

The number of shares into which fully or partially vestednon-option equity outstanding as of the balance sheet date can be currently converted under the non-option equity plan.

+ References

No definition available.

+ Details

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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 non-option equity outstanding and currently exercisable under the non-option equity plan.

+ References

No definition available.

+ Details

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- Definition

Weighted average price at which non-option equity holders acquired shares when converting their non-option equity into shares.

+ References

No definition available.

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- Definition

Weighted average price at which non-option equity holders acquired shares when converting their non-option equity into shares.

+ References

No definition available.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of non-option equity.

+ References

No definition available.

+ Details

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- Definition

Weighted average remaining contractual term for vested portions of non-option equity outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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

+ References

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- Definition

Number of non-option equity instruments exercised by 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)(2)
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- Definition

Number of shares under non-option equity instrument agreements that were cancelled as a result of occurrence of a terminating event.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

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

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-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

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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-Publisher FASB
-Name Accounting Standards Codification
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