Deferred compensation arrangement with individual cash awards interest rate applicable margin.

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- Definition

Director Stock Payment Period in Days

+ References

No definition available.

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- Definition

Distribution payment period.

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- Definition

Employee service sharebased compensation nonvested awards compensation cost not yet recognized net of tax.

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- Definition

Postretirement Benefits Plan Vesting Period

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No definition available.

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- Definition

Share Based Compensation Agreement Cash Settlement Price Per Share

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No definition available.

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- Definition

Amount of commitment made to pay deferred cash remuneration.

+ References

No definition available.

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- Definition

The total fair value of shares issued during the period under a deferred compensation arrangement.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

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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 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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- Definition

The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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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

Net number of non-option equity instruments granted to participants.

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(ii)
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-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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- Definition

Number of options outstanding, including both vested and non-vested options.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

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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Stock-Based Compensation and Incentive Plans - Additional Information (Detail) - USD ($)		1 Months Ended	9 Months Ended	12 Months Ended
	Jan. 16, 2018	Jul. 31, 2017	Dec. 31, 2017	Mar. 31, 2017	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option awards outstanding			0
Director stock payment period							15 days
Deferred Cash Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Interest rate, applicable margin to 10 year Treasury note				1.50%
Distribution payment period				15 days
Director
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Value of stock units granted						$ 115,000	$ 100,000
Director \| Deferred Cash Award
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Value of cash awards granted				$ 97,750
2017 Stock Incentive Plan \| Plan of Reorganization
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
General vesting period, years		3 years
Deferred Stock Unit Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
New awards have been issued								0
Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option expiration period			3 months
Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Option expiration period			10 years
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
General vesting period, years			3 years
Post retirement period to exercise vested options			2 years
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Total unrecognized stock compensation costs			$ 24,500,000
Total unrecognized stock compensation costs, net of tax			$ 18,200,000
Restricted Stock Units (RSUs) \| Time Based Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation outstanding number			418,301
Restricted Stock Units (RSUs) \| 2017 Stock Incentive Plan \| Plan of Reorganization \| Director
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
General vesting period, years		1 year
Restricted Stock Units (RSUs) \| 2017 Stock Incentive Plan \| Plan of Reorganization \| CEO \| Scenario, Forecast
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
General vesting period, years	1 year
Phantom Stock Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
General vesting period, years			3 years
Total unrecognized stock compensation costs			$ 300,000
Total unrecognized stock compensation costs, net of tax			$ 200,000
New awards issued			0
Phantom Stock Plan \| Series A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of non-vested shares			$ 1.00
New awards have been issued			21,934
Phantom Stock Plan \| Series B
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of non-vested shares			$ 0.98
New awards have been issued			23,712
Phantom Stock Plan \| Time Based Restricted Stock Awards
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation outstanding number			34,525
Fair value of non-vested shares			$ 308.24
New awards have been issued			13,526
Phantom Stock Plan \| Non-Vested Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of non-vested shares			$ 24.40
Phantom Stock Plan \| Non-Vested Shares \| Series A
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of non-vested shares			2.38
Phantom Stock Plan \| Non-Vested Shares \| Series B
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Fair value of non-vested shares			$ 2.08
Cash-based Performance Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share based compensation outstanding number			0
Cash-based Performance Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Units awarded, vesting rights amount					$ 2