Compensation Arrangement with Individual, Shares Issued

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award, Equity Instruments Other Than Options, Performance Period

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Forfeiture Rate

+ References

No definition available.

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
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- Definition

Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
-Subparagraph (j)
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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ 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 (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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- 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.

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-Publisher FASB
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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

+ References

No definition available.

+ Details

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- Definition

Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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- Definition

Number of share options (or share units) exercised during the current period.

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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended					12 Months Ended
	May 31, 2017	May 31, 2016	Sep. 30, 2015	Nov. 30, 2014	May 31, 2011	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Approved and authorized maximum number of shares to be issued	2,400,000
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price						$ 7.22	$ 4.98	$ 5.82
Compensation expense related to stock based awards outstanding						$ 2,300
Granted (in shares)						425,204	587,862	143,862
Proceeds received upon exercise of stock options						$ 1,300	$ 67	$ 28
Exercise of stock options, shares						229,551	13,850	3,970
Total share-based compensation cost not yet recognized						$ 2,900
Share-based compensation cost not yet recognized, period for recognition						2 years
Total intrinsic value of options exercised						$ 706	$ 53	$ 17
Total fair value of shares vested						$ 855	$ 986	$ 1,226
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, expiration period					10 years
Forfeiture rate applied to options						5.50%
Stock options \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants awarded during period (in shares)	12,465	14,170
Weighted average grant-date fair value of options granted (in USD per share)	$ 7.22
Stock options \| Officers and Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period				3 years			3 years
Weighted average grant-date fair value of options granted (in USD per share)	$ 7.22	$ 4.96		$ 4.98
Granted (in shares)	213,643	267,175					587,862
Stock options \| Directors, Officers and Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants awarded during period (in shares)						0
Stock options \| Chief Operating Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants awarded during period (in shares)			38,660
Weighted average grant-date fair value of options granted (in USD per share)			$ 5.82
Granted (in shares)			143,862
Stock options \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, vesting period					3 years
Performance Shares \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average grant-date fair value of options granted (in USD per share)		$ 4.94
Performance Shares \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards granted in period	69,945	68,977
Performance period	2 years	2 years
Weighted average grant-date fair value of options granted (in USD per share)	$ 7.22
2017 LTIP \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeiture rate applied to options						3.20%