Debt (Narrative) (Details)	1 Months Ended		3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
	Apr. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Apr. 30, 2019 USD ($)	Jul. 31, 2019 USD ($)	Oct. 31, 2019 USD ($)	Jan. 31, 2020 USD ($)
Line of Credit Facility [Line Items]
Revolving credit facility bears interest increased						2.00%
Interest rate						6.00%
Judgments or judicial actions against the borrowers in excess						$ 250,000
Accounts receivable [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation						85.00%
Inventory [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation						60.00%
Maximum [Member]
Line of Credit Facility [Line Items]
Line Of Credit Facility, Borrowing Capacity, Term						$ 15,000,000
Maximum [Member] | Accounts receivable [Member]
Line of Credit Facility [Line Items]
Revolving credit facility borrowing base limitation						85.00%
Amendment No. 19 to Credit Facility [Member]
Line of Credit Facility [Line Items]
Non-refundable Extension Fee		$ 24,000
Amendment No. 20 To Credit Facility [Member]
Line of Credit Facility [Line Items]
Minimum EBITDA	$ 5,000,000		$ 5,000,000
Maximum fixed charge coverage ratio	1.10		1.10	2.25
Non-refundable Extension Fee	$ 125,000
Amendment No. 20 To Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Covenant, Capital Expenditures Limit			$ 900,000	$ 1,900,000
Debt Instrument, Covenant, Aggregate Debt	$ 8,000,000		$ 8,000,000
PNC [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Remaining borrowing capacity						$ 19,936,000
PNC [Member] | Revolving Credit Facility [Member] | Amendment No. 19 to Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		65,000,000
PNC [Member] | Seasonal Advance [Member] | Amendment No. 19 to Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		15,000,000
PNC [Member] | Equipment Loan [Member] | Amendment No. 19 to Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		10,000,000
Line of credit facility, Equipment financing		$ 2,000,000
Eurodollar [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of						1.75%
Eurodollar [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of						2.25%
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of						0.75%
Alternate Base Rate Loans [Member] | London Interbank Offered Rate LIBOR [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Revolving credit facility bears interest range of						1.25%
Debt Covenant Term One [Member] | Amendment No. 20 To Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Covenant, Capital Expenditures Limit					$ 3,900,000
Debt Instrument, Covenant, Capital Expenditure Limit Term On EBITDA					8,500,000
Debt Covenant Term Two [Member] | Amendment No. 20 To Credit Facility [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Debt Instrument, Covenant, Capital Expenditures Limit					2,900,000
Debt Instrument, Covenant, Capital Expenditure Limit Term On EBITDA					$ 8,500,000