Cumulative Stock Issued During Period, Shares, Employee Stock Purchase Plans

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- Definition

Share-based compensation arrangement by share-based payment award discount recognized as compensation expense.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award market price of restricted stock.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share based payment award options grants.

+ References

No definition available.

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- Definition

Share-based compensation, restricted period.

+ References

No definition available.

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- Definition

Share based compensation restricted period for granted shares.

+ References

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

Stock Issued During Period, Weighted Average Fair Value, Employee Stock Purchase Plans

+ References

No definition available.

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- Definition

Value of stock issued under share-based plans to employees or officers which is the unearned portion, accounted for under the fair value method.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 35
-Paragraph 2
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- Definition

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.

+ References

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- Definition

The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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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

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

+ References

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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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Paragraph 2
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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.

+ Details

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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

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

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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

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.

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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

Number of shares issued during the period as a result of an employee stock purchase plan.

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- Definition

Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.

+ References

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Stock-Based Compensation Plans (Narrative) (Details)	12 Months Ended
Stock-Based Compensation Plans (Narrative) (Details)	Dec. 31, 2018 USD ($) plan $ / shares shares	Dec. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	May 31, 2014 shares	Dec. 31, 2013 shares	Dec. 31, 2012 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost \| $	$ 23,003
Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options available for grant (in shares)				24,000,000
Options granted net of shares from canceled/expired options (in shares)	12,787,960
Unrecognized compensation cost \| $	$ 8,445,267
Weighted-average period for unrecognized compensation cost expected to be recognized	1 year 10 months 24 days
Non-Employee Director Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period	6 months
Shares approved (in shares)						1,000,000
Grants in period (in shares)	1,074,480
Option expiration period, years	10 years
Previous Non-Employee Director Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	483,940
Restricted Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares approved (in shares)			9,000,000
Restricted period, maximum, in years			10 years
Shares granted with restriction period (in shares)	2,637,853
Shares, granted (in shares)	6,376,394
Unearned stock-based compensation \| $	$ 34,824,960
Amortization expense \| $	$ 8,841,985	$ 5,353,339	$ 3,885,042
Restricted Stock Plan, Five Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted with restriction period (in shares)	279,420	228,630	246,660
Restricted period for granted shares, in years	5 years
Restricted Stock Plan, Four Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares granted with restriction period (in shares)	762,749	628,015
Restricted period for granted shares, in years	4 years
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares approved (in shares)					2,000,000
ESPP discount rate	85.00%
Discount recognized as compensation expense	15.00%
Employee Stock Purchase Plan, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares sold to employees during period (in shares)	177,846	175,479	177,781
Cumulative shares sold to employees during period (in shares)	972,843
Weighted average fair value of shares sold (in dollars per share) \| $ / shares	$ 18.38
Minimum \| Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period	1 year
Award expiration period	5 years
Minimum \| Restricted Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market price (in dollars per share) \| $ / shares	$ 20.21	$ 18.97	$ 14.70
Maximum \| Employee Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period	5 years
Award expiration period	10 years
Maximum \| Restricted Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Market price (in dollars per share) \| $ / shares	$ 23.14	$ 21.33	$ 19.69
Stock Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan	4
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan	2