Debt - Additional Information (Detail) - USD ($)		9 Months Ended
	Nov. 30, 2017	Oct. 28, 2017	May 01, 2017	Apr. 29, 2017	Feb. 28, 2017
Credit Agreement Amendment [Member]
Debt Instrument [Line Items]
Stock repurchase authorized amount			$ 12,000,000	$ 5,000,000
Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity		$ 8,648,000
LIBOR [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		1.00%
Federal Funds Effective Swap Rate [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		0.50%
Minimum [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate	0.00%
Minimum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Percentage added to variable rate		0.00%
Minimum [Member] | LIBOR [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		1.00%
Minimum [Member] | LIBOR [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Interest rate		1.00%
Maximum [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Interest rate	0.50%
Maximum [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Percentage added to variable rate		0.50%
Maximum [Member] | LIBOR [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Interest rate		1.50%
Maximum [Member] | LIBOR [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Interest rate		1.50%
Bank of America, N.A. [Member] | Revolving Credit Facility [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Principal amount of debt	$ 15,000,000
Bank of America, N.A. [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Credit facility, maximum borrowing capacity					$ 9,200,000
Bank of America, N.A. [Member] | Term Loan [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Principal amount of debt	$ 15,000,000