Compensation, IPO Bonus Expense

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award. Number Of Installments

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No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options, Cancellations in Period

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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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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

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- Definition

Face amount or stated value per share of common stock.

+ 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

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=6415400&loc=d3e5070-113901

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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 total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ 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 (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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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
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-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
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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).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Paragraph 2
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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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-Paragraph 2
-Subparagraph (c)(2)(iii)(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.

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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

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=6415400&loc=d3e5070-113901

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option 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)(1)(iv)(3)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

+ 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 (d)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

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

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-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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-Subparagraph (c)(1)(i)-(ii)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

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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=6415400&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.

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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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Stock-Based Compensation - Additional Information (Details)										1 Months Ended	3 Months Ended		9 Months Ended		12 Months Ended			22 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares	Jun. 05, 2017 shares	Mar. 22, 2017 shares	Mar. 16, 2017 USD ($) shares	Jul. 19, 2016 installment shares	Dec. 31, 2014 shares	Dec. 01, 2013 installment shares	Sep. 30, 2013 $ / shares shares	Jun. 14, 2013 shares	Dec. 31, 2016 USD ($) $ / shares shares	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) $ / shares shares	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 shares	Dec. 31, 2014 $ / shares shares	Mar. 31, 2017 shares	Mar. 04, 2014 shares	Mar. 04, 2013 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)													793,738		1,274,549	0
Outstanding value of options (in dollars per share) \| $ / shares													$ 14.00		$ 2.25	$ 0.00
Forfeited (in shares)													5,148		114,456	0	13,437
Deferred IPO bonus expense \| $											$ 677,000		$ 7,706,000
Outstanding balance (in shares)	4,636,353					3,485,791				4,645,884	4,636,353		4,636,353		4,645,884	3,485,791	3,485,791	3,485,791
Canceled (in shares)													(571,927)		0
Common stock, par value (in dollars per share) \| $ / shares	$ 0.001							$ 0.001		$ 0.001	$ 0.001		$ 0.001		$ 0.001	$ 0.001
Stock-based compensation \| $											$ 751,000	$ 510,000	$ 8,730,000	$ 1,130,000	$ 1,649,282	$ 1,238,824
Granted (in dollars per share) \| $ / shares													$ 3.35		$ 1.77	$ 0.00
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			372,335					372,335					691,585
Canceled (in shares)			(372,335)
Restricted stock units, conversion of stock, conversion rights (in shares)								1
Granted (in dollars per share) \| $ / shares								$ 3.89					$ 13.65
Vested (in shares)													0
Granted (in dollars per share) \| $ / shares								$ 3.89
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)													169,635
Vested (in shares)													0
Stock Option Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)																				4,645,884	4,645,884
Deferred IPO bonus expense \| $				$ 5,100,000
Stock Option Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)																		3,499,228
Outstanding value of options (in dollars per share) \| $ / shares																		$ 3.96
Expiration period						10 years
Incentive Award Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)																			5,800,000
Stock-based compensation \| $															$ 1,600,000	$ 1,200,000
Compensation cost not yet recognized, period for recognition	2 years 10 months 24 days														1 year 7 months 6 days
Tax benefit from compensation expense \| $													$ 8,700,000	1,100,000	$ 600,000	400,000
Compensation not yet recognized, stock options \| $	$ 7,500,000									$ 2,400,000	$ 7,500,000		7,500,000		2,400,000
Incentive Award Plan \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)		319,250
Granted (in shares)		319,250
Stock-based compensation \| $													5,800,000	0
Restricted stock units, conversion of stock, conversion rights (in shares)		1
Incentive Award Plan \| Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation \| $													200,000	0
June 14, 2013 \| Stock Option Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)									2,799,408
Expiration period									10 years
Award vesting rights									25.00%
Stock-based compensation \| $													700,000	900,000	$ 1,200,000	$ 1,200,000
December 1, 2013 \| Stock Option Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)							699,820
Number of installments \| installment							4
Expiration period							10 years
Award vesting rights							25.00%
Forfeited (in shares)															114,456
July 19, 2016 \| Stock Option Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)					1,274,549
Number of installments \| installment					5
Expiration period					10 years
Award vesting rights										20.00%
Stock-based compensation \| $													1,800,000	200,000	$ 400,000
March 16, 2017 \| Stock Option Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)				793,738
Expiration period				10 years
Stock-based compensation \| $													$ 400,000	$ 0