Income Tax [Line Items]

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- Definition

Net Operating Loss Carry Forwards Expiration Date

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- Definition

Tax Benefit Recognized Threshold Limit Percentage

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- Definition

Amount of income tax benefit for remeasurement of deferred tax liability from change in tax rate pursuant to Tax Cuts and Jobs Act.

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- Definition

Unrecognized Tax Benefits Statutory Expiration Period

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 13
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- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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- Definition

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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- Definition

Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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- Definition

Amount of interest expense for an underpayment of income taxes.

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Income Taxes - Additional Information (Detail) - USD ($)	2 Months Ended	10 Months Ended	12 Months Ended
	Feb. 28, 2018	Dec. 31, 2017	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Income Tax [Line Items]
Effective tax rate on earnings from operations			30.20%	34.00%	36.80%
Corporate tax rate	21.00%	35.00%	32.70%	35.00%	35.00%
Reduction in income tax expense recognized to adjustment of deferred tax liabilities			$ 3,600,000
Tax benefit recognized			50.00%
Unrecognized tax benefits, including accrued interest and penalties	$ 141,000		$ 141,000	$ 249,000
Unrecognized tax benefit includes an aggregate of interest expense			$ 2,000
Unrecognized tax benefits expiring			12 months
Unrecognized interest or penalties other than tax benefits			$ 0	$ 0	$ 0
Internal Revenue Service (IRS) [Member]
Income Tax [Line Items]
Operating Loss Carryforwards	$ 84,000		$ 84,000
Internal Revenue Service (IRS) [Member] \| Minimum [Member]
Income Tax [Line Items]
Net operating loss carry forwards expiring			2024
Internal Revenue Service (IRS) [Member] \| Maximum [Member]
Income Tax [Line Items]
Net operating loss carry forwards expiring			2025