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Equity Compensation Plans - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	May. 14, 2015	Feb. 18, 2015	May. 14, 2014	Sep. 30, 2015	Dec. 31, 2014	Jul. 29, 2013	Apr. 05, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized				300,000,000	300,000,000
Shares issued to Directors							3,000
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock granted in period		100,000
Common stock grant date value		$ 935
Share price		$ 9.35
Awards vesting period		3 years
SARs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted		300,000
Options grant date value		$ 219
Directors Stock Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock granted, shares	12,000		9,000
Stock granted, value	$ 107		$ 81
Stock granted, stock price	$ 8.89		$ 8.95
Amended and Restated Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized						800,000

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Share based compensation arrangement by share based payment award equity instruments other than options grant date fair value.

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Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Weighted Average Grant Date Fair Value Amount

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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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.

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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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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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).

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

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

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Number of shares of capital stock issued (purchased by employees) in connection with an employee stock ownership plan.

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Aggregate value of stock issued during the period as a result of employee stock ownership plan (ESOP).

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