Adjustments Related To Tax Withholding And Exercise Of Options For Share-Based Compensation

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- Definition

Share-based Compensation Arrangements by Share-based Payment Award, Options, Tax Withholding And Exercises in Period, Weighted Average Exercise Price

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- Definition

Shares Paid For Tax Withholding And Exercising Options For Share Based Compensation

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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.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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No definition available.

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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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
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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

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- Definition

Percentage of vesting of share-based compensation awards.

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Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended		12 Months Ended
	Oct. 20, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Jul. 23, 2017	May 16, 2017
Class of Stock [Line Items]
Cash dividends to common stockholders		$ 1,788	$ 1,528	$ 5,103	$ 4,573	$ 6,223
Cash dividends per common share (usd per share)		$ 0.29	$ 0.25	$ 0.83	$ 0.75
Number of shares available for grant								118,668
Shares withheld for tax withholding and exercise of options				11,938
Amount of shares withheld for tax withholding and exercise of options				$ 782
Shares withheld for tax withholding and exercise of options, weighted average price (usd per share)				$ 65.50
Performance-based stock awards
Class of Stock [Line Items]
Vesting period of performance-based stock awards				3 years
Performance-based stock awards \| Minimum
Class of Stock [Line Items]
Vesting percentage of performance-based awards				0.00%
Performance-based stock awards \| Maximum
Class of Stock [Line Items]
Vesting percentage of performance-based awards				200.00%
Series A Junior Participating Preferred Stock
Class of Stock [Line Items]
Number of shares each right entitles holder to purchase							0.01
Exercise price of right (usd per share)							$ 9,000
Subsequent event
Class of Stock [Line Items]
Dividends declared per common share (usd per share)	$ 0.29