Share Based Payments (Details) - $ / shares	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward]
Nonvested options - beginning of period	431,235
Nonvested options granted	12,000
Nonvested options vested or forfeited	(10,605)
Nonvested options - end of period	432,630
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Nonvested options - beginning of period	$ 8.22
Nonvested options granted	10.72	$ 7.67
Nonvested options vested or forfeited	7.61
Nonvested options - end of period	$ 8.31

Number of nonvested share-based payment award options that vested or were forfeited during the period.

No definition available.

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Period Type:	duration

- Definition

Weighted average grant date fair value of nonvested options that were vested or forfeited during the period.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

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

+ References

No definition available.

+ Details

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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- Definition

Number of non-vested options outstanding.

+ References

No definition available.

+ Details

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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

No definition available.

+ Details

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- Definition

Weighted average grant-date fair value of non-vested options outstanding.

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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