Note 3 - Accounts Receivable	9 Months Ended
Oct. 31, 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 United Arab Emirates 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, due to the long-term nature of the receivable, $ 3.5 million was included in the balance of other long-term assets as of October 31, 2019 and January 31, 2019 .The Company completed all of its deliverables in 2015 under the related contract, and has been engaged in ongoing active efforts to collect this outstanding amount. During the first nine months of fiscal 2019 the Company received $ 0.5 million, thus reducing this balance to $ 4.2 million as of October 31, 2019 . As a result, the Company did not reserve any allowance against this receivable as of October 31, 2019 . The Company continues to engage with the customer to ensure full payment of open balances, and during fiscal 2019 has 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, the Company may recognize an allowance for all, or substantially all, of any such then uncollected amounts. For the three months ended October 31, 2019 one individual customer accounted for 16% of the Company’s consolidated net sales, and during the same period in 2018, no individual customer accounted for more than 10% of the Company's consolidated net sales. For the nine months ended October 31, 2019 one customer accounted for 11% of the Company’s consolidated net sales, and during the same period in 2018, no individual customer accounted for more than 10% of the Company's consolidated net sales At October 31, 2019 and January 31, 2019 , three customers collectively accounted for 29.8% 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 United Arab Emirates 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, due to the long-term nature of the receivable, $

3.5

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

as of

October 31, 2019

and

January 31, 2019

.The Company completed all of its deliverables in

2015

under the related contract, and has been engaged in ongoing active efforts to collect this outstanding amount. During the

first

nine

months of fiscal

2019

the Company received $

0.5

million, thus reducing this balance to $

4.2

million

as of

October 31, 2019

. As a result, the Company did

not

reserve any allowance against this receivable

as of

October 31, 2019

. The Company continues to engage with the customer to ensure full payment of open balances, and during fiscal

2019

has 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, the Company

may

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

For the

three

months ended

October 31, 2019

one

individual customer accounted for

16%

of the Company’s consolidated net sales, and during the same period in

2018,

individual customer accounted for more than

10%

of the Company's consolidated net sales. For the

nine

months ended

October 31, 2019

one

customer accounted for

11%

of the Company’s consolidated net sales, and during the same period in

2018,

individual customer accounted for more than

10%

of the Company's consolidated net sales

October 31, 2019

and

January 31, 2019

three

customers collectively accounted for

29.8%

and

39.4%

of the Company's accounts receivable, respectively.