Unrecognized cost of unvested share-based compensation awards.

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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.

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- Definition

Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

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

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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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.

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- Definition

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

+ References

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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).

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- Definition

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

+ References

No definition available.

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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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- Definition

Percentage of vesting of share-based compensation awards.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: 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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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(2)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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Stock Options (Narrative) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	May. 07, 2015	May. 07, 2009	May. 03, 2005	May. 03, 2001
Qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	29,500	48,250	49,000
Weighted average grant date fair value of options granted	$ 27.63	$ 27.23	$ 20.56
Total unrecognized compensation cost related to non-vested share-based compensation arrangements	$ 1,713
Period cost is expected to be recognized (years)	5 years
Exercise of stock options, shares	75,355	27,700	81,880
Non Qualified Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted	0	29,000	25,000
Weighted average grant date fair value of options granted		$ 27.72	$ 20.56
Total unrecognized compensation cost related to non-vested share-based compensation arrangements	$ 80
Period cost is expected to be recognized (years)	5 years
Exercise of stock options, shares	4,800	11,600	0
Proceeds from stock options exercised	$ 55	$ 270	$ 0
Tax deductions from the exercise of stock options	187	$ 262	$ 0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation cost related to non-vested share-based compensation arrangements	$ 1,242
Period cost is expected to be recognized (years)	4 years
Weighted average remaining contractual life (years)	3 years 1 month 10 days	2 years 4 months 21 days	2 years 1 month 2 days
Restricted Stock Units (RSUs) \| Year One after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	25.00%
Award vesting period (years)	1 year
Restricted Stock Units (RSUs) \| Year Two after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	25.00%
Restricted Stock Units (RSUs) \| Year Three after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	25.00%
Restricted Stock Units (RSUs) \| Year Four after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	25.00%
2015 ISO Plan \| Qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for options to be issued				400,000
Granted	29,500
2015 ISO Plan \| Qualified Stock Options \| Year One after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
Award vesting period (years)	1 year
2015 ISO Plan \| Qualified Stock Options \| Year Two after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2015 ISO Plan \| Qualified Stock Options \| Year Three after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2015 ISO Plan \| Qualified Stock Options \| Year Four after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2015 ISO Plan \| Qualified Stock Options \| Year Five after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2005 Incentive Stock Option Plan \| Qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for options to be issued						500,000
Granted	0	48,250	49,000
2005 Incentive Stock Option Plan \| Qualified Stock Options \| Year One after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
Award vesting period (years)	1 year
2005 Incentive Stock Option Plan \| Qualified Stock Options \| Year Two after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2005 Incentive Stock Option Plan \| Qualified Stock Options \| Year Three after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2005 Incentive Stock Option Plan \| Qualified Stock Options \| Year Four after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2005 Incentive Stock Option Plan \| Qualified Stock Options \| Year Five after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
FAR 1999 NQSO Plan \| Non Qualified Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for options to be issued							400,000
FAR 1999 NQSO Plan \| Non Qualified Options \| Year One after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
Award vesting period (years)	1 year
FAR 1999 NQSO Plan \| Non Qualified Options \| Year Two after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
FAR 1999 NQSO Plan \| Non Qualified Options \| Year Three after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
FAR 1999 NQSO Plan \| Non Qualified Options \| Year Four after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
FAR 1999 NQSO Plan \| Non Qualified Options \| Year Five after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2009 Equity Incentive Plan \| Non Qualified Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock reserved for options to be issued					400,000
2009 Equity Incentive Plan \| Non Qualified Options \| Year One after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
Award vesting period (years)	1 year
2009 Equity Incentive Plan \| Non Qualified Options \| Year Two after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2009 Equity Incentive Plan \| Non Qualified Options \| Year Three after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2009 Equity Incentive Plan \| Non Qualified Options \| Year Four after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%
2009 Equity Incentive Plan \| Non Qualified Options \| Year Five after Grant Date
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual vesting percentage of award	20.00%