Share-based Compensation Arrangement By Share-based Payment Award, Monthly Withholding For Compensation Payment

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Accumulation Period

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Annual Requirement For Plan Eligibility

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Maximum Percent Of Annual Base Earnings Withholding For Purchases Of Stock

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number Of Option Plans

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number Of Shares Authorized To Be Purchased Annually

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Tranches

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Number of Tranches Vested During Period

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Offering Period

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants, Exercise Price, Percent of Fair Value

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Weekly Requirement For Plan Eligibility

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No definition available.

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- Definition

Stock Repurchase Program, Increase In Remaining Authorized Repurchase Amount

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No definition available.

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- Definition

Stockholders' Equity Note, Stockholder Ownership Percentage, Threshold For Restrictions

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No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

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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=66902209&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

Discount rate from fair value on offering date that participants pay for shares.

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

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- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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).

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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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

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ 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

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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

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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

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- Definition

Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

+ References

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- Definition

Number of options outstanding, including both vested and non-vested options.

+ 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=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

+ References

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

+ References

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- Definition

Number of shares for which recognition of compensation cost was accelerated.

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No definition available.

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- Definition

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

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- Definition

For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer.

+ References

No definition available.

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- Definition

Value, before forfeitures, of stock or other type of equity granted of any equity-based compensation plan other than an employee stock ownership plan (ESOP).

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No definition available.

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- Definition

Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SAB TOPIC 4.C)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Stock Split
-URI http://asc.fasb.org/extlink&oid=6525746

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CAPITAL STOCK - NARRATIVE (Details)									1 Months Ended			12 Months Ended			18 Months Ended
CAPITAL STOCK - NARRATIVE (Details)	Mar. 02, 2016 shares	Oct. 01, 2015 shares	Jul. 01, 2015	May 05, 2015 hour shares	Apr. 01, 2015 USD ($)	Mar. 17, 2015 shares	May 06, 2014 tranche shares	Mar. 26, 2014 tranche shares	May 31, 2016 shares	May 31, 2012 shares	Dec. 31, 2010	Dec. 31, 2016 USD ($) plans $ / shares shares	Dec. 31, 2015 USD ($) tranche $ / shares shares	Dec. 31, 2014 USD ($) tranche $ / shares shares	Dec. 31, 2015 shares	Mar. 31, 2015 USD ($)	Sep. 26, 2014 tranche	Dec. 31, 2013 shares	May 31, 2003 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend rate (as a percent)												0.00%	0.00%	0.00%
Reverse stock split conversion ratio											0.10	10
Fair value of stock options granted during period \| $												$ 3,200,000	$ 1,600,000	$ 700,000
Weighted average grant date fair value \| $ / shares												$ 24.59	$ 11.35	$ 5.28
Intrinsic value of options exercised \| $												$ 9,900,000	$ 4,700,000	$ 700,000
Proceeds from stock options exercised \| $												$ 1,900,000	$ 1,800,000	$ 1,200,000
Weighted average purchase price of shares purchased \| $ / shares												$ 8.23	$ 6.25	$ 2.61
Stockholder ownership percentage, threshold for restrictions												500.00%
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock option plans \| plans												2
Intrinsic value of options exercised \| $												$ 31,700,000
Options outstanding												829,617	940,610	1,074,251	940,610			1,321,232
Total unrecognized compensation expense related to outstanding stock options \| $												$ 4,500,000
Period for recognition of unrecognized compensation expense												1 year 10 months 17 days
Intrinsic value of options outstanding \| $												$ 40,300,000
Incentive Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of fair value for options granted												100.00%
Non-qualified Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of fair value for options granted												85.00%
Excluded Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding												0.5
Options outstanding, weighted average remaining contractual term												4 months 1 day
Options outstanding, weighted average exercise price \| $ / shares												$ 22.50
Employee Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend rate (as a percent)												0.00%	0.00%	0.00%
Shares issued during period												17,057	16,673	29,847
Share Purchase Plan 1997
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in number of share to be repurchased									500,000	250,000
Number of shares authorized to be repurchased annually										45,000
Number of shares authorized				450,000								450,000
Common stock, shares issued												408,668
Remaining number of shares authorized to be repurchased												407,339
Increase in authorized repurchase amount				75,000
Weekly hours requirement for plan eligibility \| hour				20
Annual month requirement for plan eligibility				5 months
Maximum percent of annual base earnings withholding for purchases of stock				10.00%
Offering period															27 months
Accumulation period															3 months
Discount from market price, purchase date			95.00%		85.00%
Share Purchase Plan 1997 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount from market price, purchase date			85.00%		85.00%
Monthly withholding for compensation payment \| $					$ 2,500											$ 25,000
Share Purchase Plan 1997 \| Maximum \| Employee Stock Purchase Plan, Purchase Price, Greater Of
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Discount from market price, purchase date			65.00%		65.00%
Discount from market price, offering date			95.00%		85.00%
Share Purchase Plan 2003
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized																			239,050
Remaining number of shares authorized to be repurchased												0
Restricted Stock \| Robert B. Grieve
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period								63,572
Number of tranches \| tranche								5
Shares immediately vested		55,715
Shares withheld for tax purposes		14,373						2,525
Nonvested restricted shares outstanding								7,857
Restricted Stock \| Kevin S. Wilson
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period								110,000
Number of tranches \| tranche								4									3
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period						52,956
Performance Shares \| Kevin S. Wilson
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period							130,000
Number of tranches \| tranche							10
Performance Shares \| Management Incentive Plan Grants 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period						24,649
Shares withheld for tax purposes	4,788
Equity instruments canceled (in shares)	10,285
Equity instruments vested (in shares)	14,364
Performance Shares \| Management Incentive Plan Grants 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued during period	15,000
Performance Shares, Stock Price Targets \| Kevin S. Wilson
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| tranche							5
Performance Shares, Adjusted EBITDA \| Kevin S. Wilson
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of tranches \| tranche							5
Number of tranches vested \| tranche													4	1