Lease Obligations - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Aug. 31, 2019	Aug. 31, 2019	Mar. 01, 2019	Feb. 28, 2019
Leases [Line Items]
Operating lease, right of use asset	$ 2,301,000	$ 2,301,000		$ 0
Lease liabilities	2,322,000	2,322,000
Short term leases	0	0
Rental income	$ 142,000	$ 284,000
Minimum [Member]
Leases [Line Items]
Operating and finance leases remaining lease terms		1 year
Maximum [Member]
Leases [Line Items]
Operating and finance leases remaining lease terms		7 years
ASU 2016-02 [Member]
Leases [Line Items]
Operating lease, right of use asset			$ 2,227,000
Lease liabilities			$ 2,243,000