Common Stock Purchase Warrants Exercise Price Per Share

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Options and Equity Instruments Other Than Options, Nonvested, Number of Shares

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No definition available.

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- Definition

Stock Issued During Period, Shares, Common Stock Warrants

+ References

No definition available.

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- Definition

Stockholders Equity Note Disclosure [Line Items]

+ References

No definition available.

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- Definition

Warrant Term

+ References

No definition available.

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- Definition

Unrecognized cost of unvested 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 (i)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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.

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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)
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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

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

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-SubTopic 10
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-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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-Paragraph 2
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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

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

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

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-Name Accounting Standards Codification
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-SubTopic 10
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-Paragraph 2
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- Definition

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

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-Publisher FASB
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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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- Definition

Percentage of vesting of share-based compensation awards.

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-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

+ 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.

+ References

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- Definition

Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Stockholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		12 Months Ended
	Apr. 06, 2007	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012
Stockholders Equity Note Disclosure [Line Items]
Common stock, shares purchased through issuance of warrants	150,000
Common stock, shares purchased through issuance of warrants per share	$ 0.01
Warrant term	7 years
Stock-based compensation expense		$ 4,595	$ 3,598	$ 1,766
Stock options, outstanding		882,748	1,054,584
Number of shares available for future grant		1,821,576
Closing price of common stock		$ 30.82
Aggregate intrinsic value of stock options exercised		$ 5,043	$ 3,638	$ 9,656
Weighted average grant date fair value of share-based awards granted		$ 14.16	$ 16.05	$ 9.45
Total fair value of stock options vested		$ 1,713	$ 1,536	$ 751
Total unrecognized compensation cost		$ 9,555
Unrecognized compensation cost, weighted average remaining requisite service period		2 years 11 months 19 days
Number of unvested options and restricted stock units		719,579
Employee Stock Option \| Former president and chief executive officer
Stockholders Equity Note Disclosure [Line Items]
Stock-based compensation expense		$ 292	$ 826
Employee Stock Option \| Former president and chief executive officer \| Vested as of April 2016
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting percentage		50.00%
Employee Stock Option \| Former president and chief executive officer \| Vested as of January 2015
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting percentage			50.00%
Employee Stock Option \| Minimum
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting period					3 years
Employee Stock Option \| Minimum \| Vest Over Three Year
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting percentage					20.00%
Employee Stock Option \| Maximum
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting period					5 years
Incentive options, term					10 years
Employee Stock Option \| Maximum \| Vest Over Five Year
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting percentage					33.00%
Non-Employee Directors
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting period					1 year
Option To Purchase Common Stock
Stockholders Equity Note Disclosure [Line Items]
Stock options, outstanding		1,236,586	1,240,935	1,225,117
Unvested Options
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting period		5 years
Restricted Stock Units (RSUs)
Stockholders Equity Note Disclosure [Line Items]
Incentive options, vesting period		5 years
Closing price of common stock		$ 30.82
Aggregate intrinsic value of restricted stock units exercised		$ 1,671	$ 1,304	$ 819
Weighted average grant date fair value of restricted stock units granted		$ 27.25	$ 29.07	$ 16.79
Total fair value of restricted stock units vested		$ 1,474	$ 781	$ 333