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Estimated Share Based Compensation Expense

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Expenses on stock appreciation rights.

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Fair Value Of Restricted Stock Units Granted To Employees

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Share Based Compensation Aggregate Compensation Cost Not Yet Recognized

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Share-based compensation arrangement by share-based payment award, award deferred vesting period.

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Stock Issued During Period Shares Restricted Stock Award Grants

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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.

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Aggregate number of common shares reserved for future issuance.

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Amount of commitment made to pay deferred cash remuneration.

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Amount of operating dividend income on securities.

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Unrecognized cost of unvested share-based compensation awards.

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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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Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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Risk-free interest rate assumption used in valuing an instrument.

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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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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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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).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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

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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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Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award.

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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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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).

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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.

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

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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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2012 Incentive Compensation Plan - Additional Information (Detail) - USD ($)			7 Months Ended	12 Months Ended
	Jul. 06, 2015	Apr. 29, 2011	Dec. 31, 2015	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for stock-based compensation					65,772
Number of shares granted to employees			790,865	790,865
Anticipated volatility factor and zero dividend yield		50.00%
Expenses for the SAR granted				$ 160,000	$ 329,000	$ 907,000
Employee Stock Option 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock agreement vesting				These shares of Restricted Stock vest in various increments and periods over a maximum of ten years from the date the stock was granted as defined under the applicable Restricted Stock Award Agreement.
Stock Compensation Plan [Member] \| 2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized for stock-based compensation			1,530,925	1,530,925
Common stock available for further issuance			740,060	740,060
SAR I Award Agreement Amended [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested portion of the company's common stock	181,290
Deferred vesting period	30 days
SAR I Award Agreement Amended [Member] \| Tranche One [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of vesting shares	100,000
SAR I Award Agreement Amended [Member] \| Tranche Two [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of vesting shares	81,290
SAR I Award Agreement Amended [Member] \| Deferred Bonus Granted in 2016 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of annual bonus	$ 250,000
SAR I Award Agreement Amended [Member] \| Deferred Bonus Granted in 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of annual bonus	250,000
SAR I Award Agreement Amended [Member] \| Deferred Bonus Granted in 2018 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of annual bonus	250,000
SAR I Award Agreement Amended [Member] \| Deferred Bonus Granted in 2019 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Amount of annual bonus	$ 250,000
SAR I [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term			4 years 10 months 24 days	6 years
Risk-free interest rate			1.53%	0.92%
Dividend yield			$ 0	$ 0
Anticipated volatility factor and zero dividend yield			50.00%	55.00%
Discount on valuation of trading activity			15.00%	15.00%
Fair value of SAR granted			$ 1.54	$ 3.31
Compensation expenses				$ 1,800,000
Total unrecognized compensation expense			$ 333,000	$ 333,000
Market value of the Company's common stock			$ 51.14	$ 51.14
Exercise price			$ 22.07	22.07
Total expected expense from initial grant			$ 2,133,000
Unrecognized compensation expense			$ 259,000
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of SAR granted				$ 28.48	$ 71.47
Compensation expenses				$ 989,000	$ 925,000	$ 361,000
Unvested portion of the company's common stock			130,244	130,244	154,251	162,993
Number of vesting shares				24,207	19,742
Expected period of recognition of cost				6 years
Restricted stock activity, amount						$ 0
Restricted stock activity, shares granted						162,993
Fair value of restricted stock vested				$ 1,101,000	$ 1,408,000
Restricted Stock [Member] \| 2012 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense			$ 4,882,000	$ 4,882,000
Restricted Stock [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period for restricted stock				10 years
SAR II [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term				7 years 3 months
Risk-free interest rate				1.76%
Dividend yield				$ 0
Anticipated volatility factor and zero dividend yield				50.00%
Fair value of SAR granted				$ 12.96
Compensation expenses				$ 37,000	$ 0	$ 0
Total unrecognized compensation expense			$ 740,000	$ 740,000
Market value of the Company's common stock			$ 24.41	$ 24.41
Exercise price			$ 24.41	$ 24.41
Expected period of recognition of cost				6 years