Note 3 - Accounts Receivable	3 Months Ended
Apr. 30, 2019
Notes to Financial Statements
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]	Note 3 - Accounts receivable The majority of the Company's accounts receivable are due from geographically dispersed contractors and manufacturing companies. Credit is extended based on an evaluation of a customer's financial condition, including the availability of credit insurance. In the U.S., collateral is not generally required. In the U.A.E. and Saudi Arabia, letters of credit are usually obtained for significant orders. Accounts receivable are due within various time periods specified in the terms applicable to the specific customer and are stated at amounts due from customers net of an allowance for claims and doubtful accounts. The allowance for doubtful accounts is based on specifically identified amounts in customers' accounts, where future collectability is deemed uncertain. Management may exercise its judgment in adjusting the provision as a consequence of known items, such as current economic factors and credit trends. Past due trade accounts receivable balances are written off when the Company's collection efforts have been unsuccessful in collecting the amount due and the amount is deemed uncollectible. The write-off is recorded against the allowance for doubtful accounts. One of the Company’s accounts receivable in the total amount of $4.7 million as of January 31, 2019 has been outstanding for several years. Included in this balance is a retention receivable amount of $3.7 million, of which, $ 3.5 million was included in the balance of other long-term assets as of April 30, 2019 and January 31, 2019 due to the long-term nature of the receivable. The Company completed all of its deliverables in 2015, and has been engaged in ongoing active efforts to collect this outstanding amount. During fiscal year 2018, the Company received payments of approximately $0.7 million, and in the first quarter of fiscal 2019 the Company received a further $0.3 million, thus reducing this balance to $4.4 million as of April 30, 2019. As a result, the Company did not reserve any allowance against this receivable as of April 30, 2019. The Company continues to engage with the customer to ensure full payment of open balances, and has also received an updated acknowledgment of the outstanding balances and assurances of payment from the customer. However, if the Company’s efforts to collect on this account are not successful in fiscal 2019, then the Company may recognize an allowance for all, or substantially all, of any such then uncollected amounts. For the three months ended April 30, 2019, no individual customer accounted for 10% or more of the Company's consolidated net sales. For the three months ended April 30, 2018, one individual customer accounted for approximately 13.5% of the Company's consolidated net sales. At April 30, 2019 and January 31, 2019, three customers collectively accounted for 33.6% and 39.4% of the Company's accounts receivable, respectively.

Note

- Accounts receivable

The majority of the Company's accounts receivable are due from geographically dispersed contractors and manufacturing companies. Credit is extended based on an evaluation of a customer's financial condition, including the availability of credit insurance. In the U.S., collateral is

not

generally required. In the U.A.E. and Saudi Arabia, letters of credit are usually obtained for significant orders. Accounts receivable are due within various time periods specified in the terms applicable to the specific customer and are stated at amounts due from customers net of an allowance for claims and doubtful accounts. The allowance for doubtful accounts is based on specifically identified amounts in customers' accounts, where future collectability is deemed uncertain. Management

may

exercise its judgment in adjusting the provision as a consequence of known items, such as current economic factors and credit trends. Past due trade accounts receivable balances are written off when the Company's collection efforts have been unsuccessful in collecting the amount due and the amount is deemed uncollectible. The write-off is recorded against the allowance for doubtful accounts.

One of the Company’s accounts receivable in the total amount of

$4.7

million as of

January 31, 2019

has been outstanding for several years. Included in this balance is a retention receivable amount of

$3.7

million, of which,

3.5

million was included in the balance of other long-term assets as of

April 30, 2019

and

January 31, 2019

due to the long-term nature of the receivable. The Company completed all of its deliverables in

2015,

and has been engaged in ongoing active efforts to collect this outstanding amount. During fiscal year

2018,

the Company received payments of approximately

$0.7

million, and in the

first

quarter of fiscal

2019

the Company received a further

$0.3

million, thus reducing this balance to

$4.4

million as of

April 30, 2019.

As a result, the Company did

not

reserve any allowance against this receivable as of

April 30, 2019.

The Company continues to engage with the customer to ensure full payment of open balances, and has also received an updated acknowledgment of the outstanding balances and assurances of payment from the customer. However, if the Company’s efforts to collect on this account are

not

successful in fiscal

2019,

then the Company

may

recognize an allowance for all, or substantially all, of any such then uncollected amounts.

For the

three

months ended

April 30, 2019,

individual customer accounted for

10%

or more of the Company's consolidated net sales. For the

three

months ended

April 30, 2018,

one

individual customer accounted for approximately

13.5%

of the Company's consolidated net sales.

April 30, 2019

and

January 31, 2019,

three

customers collectively accounted for

33.6%

and

39.4%

of the Company's accounts receivable, respectively.