Liquidity and Going Concern Additional Information (Details) - USD ($) $ in Thousands	Aug. 31, 2018	Feb. 28, 2018
Other Commitments [Line Items]
Cash and cash equivalents	$ 7,150	$ 4,107
Two Thousand Fourteen Credit Agreement
Other Commitments [Line Items]
Total Credit Agreement debt	28,000	78,451
Two Thousand Fourteen Credit Agreement | Revolver
Other Commitments [Line Items]
Total Credit Agreement debt	0	9,000
Two Thousand Fourteen Credit Agreement | Term Loan
Other Commitments [Line Items]
Total Credit Agreement debt	$ 28,000	$ 69,451