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.

No definition available.

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Debt - Minimum EBITDA Levels (Details) - Credit Agreement - USD ($)	12 Months Ended
	Jan. 31, 2017	Oct. 31, 2016	Jul. 31, 2016	Apr. 30, 2016
Debt Instrument [Line Items]
Minimum EBITDA			$ 1,500,000	$ 3,000,000
Scenario, Forecast
Debt Instrument [Line Items]
Minimum EBITDA	$ 0	$ 250,000