Shared-based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	$ 524	$ 529
Proceeds from Stock Options Exercised	26	0
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	$ 96
Executive Officer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	37,918
Share Based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Accelerated	3,333
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation	$ 524	529
Total income tax benefit recognized related to restricted stock awards	171	210
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	$ 3,600
Compensation cost recognition weighted average period	1 year 10 months 24 days
Share based compensation expense	$ 228	349
Award vesting period	5 years
Adjustments to Additional Paid in Capital, Income Tax Benefit from Share-based Compensation	$ 96	$ 165
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period	1,000
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized	$ 800
Compensation cost recognition weighted average period	2 years 2 months 12 days
Share-based compensation arrangement by share-based payment award, options, grants in period, weighted average grant date fair value	$ 7.47
Share based compensation arrangement by share based payment award options vesting period	3 years
Share based compensation arrangement by share based payment award options expiration term	10 years
Stock Options [Member] \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, upper range limit	$ 31.55
Stock Options [Member] \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, shares authorized under stock option plans, exercise price range, lower range limit	$ 24.26

The number of equity-based payment instruments, excluding stock (or unit) options, that were accelerated.

No definition available.

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- Definition

Expiration term for options outstanding during the reporting period.

+ References

No definition available.

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- Definition

Share based compensation arrangement by share-based payment award options vesting period during the reporting period.

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- Definition

Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

+ References

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-Publisher FASB
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- Definition

The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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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.

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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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- 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 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.

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

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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.

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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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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

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