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

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- Definition

Share-based compensation, restricted period.

+ References

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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

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.30)
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- Definition

Unrecognized cost of unvested share-based compensation awards.

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-Publisher FASB
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- Definition

The shares or units in an ESOP trust that have been assigned to individual participant accounts based on a known formula. IRS rules require allocations to be nondiscriminatory generally based on compensation, length of service, or a combination of both. For any particular participant such shares or units may be vested, unvested, or partially vested.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-Subparagraph (d)
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- Definition

Sum of the allocated, committed-to-be-released and suspense shares of the entity held by the plan.

+ 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
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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

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-Publisher FASB
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- Definition

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

+ References

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-Publisher FASB
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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).

+ References

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-Publisher FASB
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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

The amount by which an asset or assets increased resulting from the transaction in which equity securities were issued to pay for goods or nonemployee services.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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-Name Accounting Standards Codification
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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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Stock-Based Compensation Plans (Narrative) (Details)	3 Months Ended		6 Months Ended
Stock-Based Compensation Plans (Narrative) (Details)	Jun. 30, 2018 USD ($) plan shares	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) plan shares	Jun. 30, 2017 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense for share-based payments \| $	$ 4,465,634	$ 3,406,371	$ 8,366,949	$ 6,890,611
Compensation cost capitalized as part of inventory \| $			$ 299,227	225,613
Employee Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares) \| shares	24,000,000		24,000,000
Unrecognized compensation cost \| $	$ 10,140,213		$ 10,140,213
Employee Stock Option Plan [Member] \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period			1 year
Option expiration period			5 years
Employee Stock Option Plan [Member] \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period			5 years
Option expiration period			10 years
Non Employee Director Stock Option Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option vesting period			6 months
Option expiration period			10 years
Unrecognized compensation cost \| $	$ 198,044		$ 198,044
Number of shares authorized (in shares) \| shares	1,000,000		1,000,000
Options granted (in shares) \| shares			476,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares approved (in shares) \| shares	2,000,000		2,000,000
ESPP discount rate			85.00%
ESPP discount rate recognized as compensation expnese			15.00%
Shares granted (in shares) \| shares	863,395		863,395
Restricted Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares) \| shares	9,000,000		9,000,000
Restricted period, maximum, in years			10 years
Unearned stock-based compensation \| $	$ 32,362,619		$ 32,362,619
Amortization expense \| $	$ 2,189,938	$ 1,285,847	$ 3,832,998	$ 2,226,658
Equity Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan	4		4
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of plans \| plan	2		2