Percent of Voting Interests Threshold to trigger higher exercise price

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock Above Minimum Threshold, Percent

+ References

No definition available.

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- Definition

Sharebased Compensation Arrangement By Sharebased Payment Award Award Future Vesting Rights Percentage

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Estimated Performance Goal Achievement Rate

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Performance Awards, Threshold Level, Number of Shares, Multiplier

+ References

No definition available.

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- Definition

The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date.

+ 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)(3)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation.

+ 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=96867065&loc=d3e5070-113901

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

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

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

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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

Percentage of vesting of share-based compensation awards.

+ 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

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

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)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

+ Details

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Stock-Based Compensation - Textual (Details) $ in Millions	1 Months Ended	3 Months Ended					9 Months Ended	12 Months Ended
Stock-Based Compensation - Textual (Details) $ in Millions	Mar. 31, 2010 shares	Sep. 30, 2017 USD ($) shares	Jun. 30, 2017	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2017 USD ($)	Dec. 31, 2016 shares	Dec. 31, 2015 shares	Mar. 31, 2018
Stock options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percent of voting interests	10.00%
Purchase price of common stock above minimum threshold	110.00%
Expiration period	10 years
Award vesting period	4 years
Compensation not yet recognized, stock options \| $		$ 2.6					$ 2.6
Stock options [Member] \| Performance Goal: Threshold Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights	75.00%
Stock options [Member] \| Performance Goal: Superior Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights	25.00%
Restricted Stock Units (RSUs) [Member] \| Performance Goal: Threshold Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	3 years
Award vesting rights	33.3333%
Restricted Stock Units (RSUs) [Member] \| Performance Goal: Target Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Award vesting rights	25.00%
RSAs and RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation not yet recognized, share-based awards other than options \| $		1.6					1.6
Performance Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation not yet recognized, share-based awards other than options \| $		0.7					0.7
Performance Based Options (PBOs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation not yet recognized, share-based awards other than options \| $		$ 1.6					$ 1.6
Minimum [Member] \| Incentive Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock	100.00%
Minimum [Member] \| Non-Statutory Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Purchase price of common stock	85.00%
2010 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (shares) \| shares	1,100,000
2016 PSU Plan [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights			50.00%	50.00%
Future vesting rights percentage		50.00%					50.00%
Estimated performance goal achievement rate				142.30%
PBOs granted in period (shares) \| shares								0
2016 PSU Plan [Member] \| Performance Shares [Member] \| Second Year Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future vesting rights percentage		50.00%					50.00%
2016 PSU Plan [Member] \| Minimum [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier					0
2015 PSU Plan [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future vesting rights percentage						92.80%
PBOs granted in period (shares) \| shares									0
2015 PSU Plan [Member] \| Performance Shares [Member] \| Second Year Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future vesting rights percentage		50.00%					50.00%
2015 PSU Plan [Member] \| Performance Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting rights				50.00%		50.00%
2015 PSU Plan [Member] \| Performance Based Options (PBOs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
PBOs granted in period (shares) \| shares		0
2017 PSU and PBO Plan [Member] \| Performance Shares [Member] \| Second Year Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future vesting rights percentage		50.00%					50.00%
2017 PSU and PBO Plan [Member] \| Performance Based Options (PBOs) [Member] \| Second Year Vesting Period [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Estimated performance goal achievement rate		132.90%					132.90%
2017 PSU and PBO Plan [Member] \| Minimum [Member] \| Performance Stock Units (PSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier					0
2017 PSU and PBO Plan [Member] \| Minimum [Member] \| Performance Based Options (PBOs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier					0
2017 PSU Plan [Member] \| Maximum [Member] \| Performance Shares [Member] \| Performance Goal: Threshold Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier							0.5
2017 PSU Plan [Member] \| Maximum [Member] \| Performance Shares [Member] \| Performance Goal: Target Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier							1
2017 PSU Plan [Member] \| Maximum [Member] \| Performance Shares [Member] \| Performance Goal: Superior Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier							2
2017 PBO Plan [Member] \| Maximum [Member] \| Performance Shares [Member] \| Performance Goal: Threshold Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier							0.25
2017 PBO Plan [Member] \| Maximum [Member] \| Performance Shares [Member] \| Performance Goal: Target Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier							0.5
2017 PBO Plan [Member] \| Maximum [Member] \| Performance Shares [Member] \| Performance Goal: Superior Level [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance awards, threshold level, number of shares, multiplier							1
Scenario, Forecast [Member] \| 2016 PSU Plan [Member] \| Performance Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future vesting rights percentage										50.00%