Number of shares subscribed by qualified employees.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Granted Fair Value

+ References

No definition available.

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- Definition

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.

+ References

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

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

+ References

No definition available.

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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 cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ References

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- Definition

The cash inflow associated with the amount received from the stock plan during the period.

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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
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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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- 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

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- Definition

Gross number of share options (or share units) granted during the period.

+ References

No definition available.

+ Details

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- Definition

Number of share instruments newly issued under a share-based compensation plan.

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- Definition

Expected term of share-based compensation awards, 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 share options (or share units) exercised during the current period.

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Share-Based Compensation - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 9,000	$ 65,000	$ 21,000
Stock-based compensation tax benefit recognized	$ 276,000	$ 271,000
Share-based compensation, number of shares reserved for issuance, contractual terms		5 years 9 months
Share-based compensation, number of options exercised	0	0	907,000
Share-based compensation, cash received from exercise of stock options	$ 0	$ 0	$ 3,593,000
Options granted to employees on grant date	0
Total intrinsic value of options exercised	$ 0	0	1,900,000
Unrecognized compensation cost related to nonvested options	$ 2,000
Unrecognized compensation cost related to nonvested options, expected recognition period	3 months
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of RSUs granted	$ 0	0	0
Unrecognized compensation cost related to nonvested RSUs	0	0
Cash received from employee stock award vesting and the forfeiture of RSUs	$ 0	0	$ 0
2004 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	1,400,000
Share-based compensation, number of shares reserved for issuance, contractual terms	10 years
2006 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	200,000
Share-based compensation, number of shares reserved for issuance, contractual terms	10 years
2007 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	400,000
Share-based compensation, number of shares reserved for issuance, contractual terms	10 years
2008 Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	200,000
Share-based compensation, number of shares reserved for issuance, contractual terms	10 years
2008 Employee Share Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares subscribed by qualified employees	0
2008 Employee Share Purchase Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	40,000
2009 Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	300,000
Share-based compensation, number of shares reserved for issuance, contractual terms	10 years
2009 Employee Share Purchase Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	40,000
Share-based compensation, number of shares issued	0
2010 Equity Incentive Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	200,000
Share-based compensation, number of shares reserved for issuance, contractual terms	10 years
2010 Employee Share Purchase Plan \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, number of shares reserved for issuance	40,000
Share-based compensation, number of shares issued	0
Capitalized stock-based compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation	$ 0	0
Stock-based compensation tax benefit recognized	$ 0	$ 0