Change in deferred compensation - equity.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Performance Period

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No definition available.

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Share-based Compensation Arrangement by Share-based Payment Award, Shares, Expected to Vest, Percentage

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No definition available.

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- Definition

The amount of the cost recognized during the period for defined contribution plans.

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-Publisher FASB
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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan.

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No definition available.

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Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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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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The amount of pension and other (such as medical, dental and life insurance) postretirement benefit costs recognized during the period for (1) defined benefit plans (periodic benefit costs include the following components: service cost, interest cost, expected return on plan assets, gain (loss) on assets, prior service cost or credit, transition asset or obligation, and gain (loss) due to settlements or curtailments) and for (2) defined contribution plans (to the extent that a plan's defined contributions to an individual's account are to be made for periods in which that individual renders services, the net cost for a period is the contribution called for in that period; if a plan calls for contributions for periods after an individual retires or terminates, the estimated cost is accrued during the employee's service period).

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This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

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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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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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- Definition

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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- 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).

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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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- 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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No definition available.

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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.

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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.

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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

Percentage of vesting of share-based compensation awards.

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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.

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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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- Definition

Number of share options (or share units) exercised during the current period.

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Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 12, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation (equity-classified)	$ 81	$ 1,511		$ 4,540	$ 3,627
Exercised (in shares)			0
Deferred compensation obligation				0	17,148
Recognized expense	100	500		900	1,700
Compensation	2,557		$ 2,557	9,904
Liability-classified awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation (equity-classified)	0	$ (19)		$ (711)	$ 4,520
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period		10 years
Vesting period			3 years
Weighted-average grant-date fair value of options granted during period (per share)				$ 3.15	$ 7.46
Total intrinsic value of options exercised				$ 2,300
Exercised (in shares)				0
Unrecognized compensation cost weighted-average recognition period			1 year 6 months
Total grant-date fair values of options vested during period				$ 1,300	$ 1,800
Deferred Common Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			0
Granted (in dollars per share)			$ 0.00
Deferred compensation obligation				3,400
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost	$ 2,400		$ 2,400
Granted (in shares)			107,563
Granted (in dollars per share)			$ 23.15
Total grant-date fair values of RSUs that vested during period				$ 2,200	$ 600
Performance Based Restricted Stock Units (PBRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)			0
Granted (in dollars per share)			$ 0.00
Performance Based Restricted Stock Units (PBRSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares expected to vest at grant date		0.00%
Performance Based Restricted Stock Units (PBRSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares expected to vest at grant date		200.00%
Vests ratably over 3 years \| Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting description			One-third vesting in each year
Award vesting rights percentage		33.33%
Vests ratably over 3 years \| Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting description			One-third vesting in each year
Award vesting rights percentage		33.33%
Vests ratably over 3 years \| Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting description			One-third vesting in each year
Award vesting rights percentage		33.33%
Performance Period 1 \| Performance Based Restricted Stock Units (PBRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period		1 year
Performance Period 2 \| Performance Based Restricted Stock Units (PBRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period		2 years
Performance Period 3 \| Performance Based Restricted Stock Units (PBRSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance period		3 years
Employees and Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance	749,600		749,600
Non-employee Director \| Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Exercised (in shares)			0	0
Granted (in shares)				195,395	15,501
Granted (in dollars per share)				$ 1.33	$ 11.61
Other Pension Plan, Postretirement or Supplemental Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pension and Other Postretirement Benefit Expense	$ 100	$ 100		$ 100	$ 100
Pension and Other Postretirement Defined Benefit Plans, Liabilities, Noncurrent	1,700		$ 1,700	2,100
Pension Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay			6.00%
Compensation	$ 100		$ 100	$ 200