Debt	6 Months Ended
Jul. 31, 2017
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	Debt. Debt totaled $16.3 million at July 31, 2017, a net increase of $4.6 million since January 31, 2017. Revolving lines North America. On September 24, 2014, the Company entered into the Credit and Security Agreement with a financial institution (as amended, "Credit Agreement"). Under the terms of the Credit Agreement, which matures on September 24, 2018, the Company can borrow up to a combined $15.0 million in the U.S. and Canada, subject to borrowing base availability from secured domestic and certain Canadian assets, such as accounts receivable and inventory, and other requirements, under a revolving line of credit. The Credit Agreement covenants restrict debt, liens, share repurchases and investments, and require achieving a minimum fixed charge coverage ratio with respective performance metrics as defined by the Credit Agreement if a minimum availability is not met. On July 31, 2017, the Company was in compliance with all covenants under the Credit Agreement. The North American revolving line balances as of July 31, 2017 and January 31, 2017 were included as current liabilities in the consolidated balance sheets, because the Credit Agreement has a subjective acceleration clause. Interest rates vary based on the average availability in the preceding fiscal quarter and are: (a) a margin in effect plus a base rate, if below certain availability limits; or (b) a margin in effect plus the Eurodollar rate for the corresponding interest period. On July 31, 2017, the Company had borrowed $7.9 million at 5.5% and 4.2% and had $4.8 million available to it under the revolving line of credit. In addition, $0.2 million of availability was used under the Credit Agreement primarily to support letters of credit to guarantee amounts committed for inventory purchases. Cash required for operations, as needed, is provided by draw downs on the line of credit. Revolving lines foreign. The Company also had credit arrangements used by its Middle Eastern subsidiaries. These credit arrangements are in the form of overdraft facilities and project financing at rates competitive in the countries in which the Company operates. Some credit arrangement covenants require a minimum tangible net worth to be maintained, including intercompany subordinated debt. In addition, some of the revolving credit facilities restrict payment of dividends. On July 31, 2017, the Company was in compliance with the covenants under the credit arrangements. On July 31, 2017, interest rates were based on the Emirates Inter Bank Offered Rate (EIBOR) plus 3.5% per annum, with a minimum interest rate of 4.5% per annum. On July 31, 2017, the Company's interest rates ranged from 5.0% to 6.5%, and the Company could borrow $23.0 million under these credit arrangements. On July 31, 2017, $7.5 million of availability was used to support letters of credit to guarantee amounts committed for inventory purchases and for performance guarantees. As there were no borrowings under these credit arrangements, an additional $15.5 million remained unused. The foreign revolving lines balances as of January 31, 2017 were included as current maturities of long-term debt in the consolidated balance sheets. On May 5, 2017, Piping Systems obtained two capital leases for a total of 0.94 million CAD (approximately $0.7 million USD at the prevailing exchange rate on the transaction date) to finance vehicle equipment. The interest rate for these capital leases is 7.8% per annum with monthly principal and interest payments of $9 thousand, and these leases mature on April 30, 2021.

Debt. Debt totaled $16.3 million at July 31, 2017, a net increase of $4.6 million since January 31, 2017.

Revolving lines North America. On September 24, 2014, the Company entered into the Credit and Security Agreement with a financial institution (as amended, "Credit Agreement"). Under the terms of the Credit Agreement, which matures on September 24, 2018, the Company can borrow up to a combined $15.0 million in the U.S. and Canada, subject to borrowing base availability from secured domestic and certain Canadian assets, such as accounts receivable and inventory, and other requirements, under a revolving line of credit. The Credit Agreement covenants restrict debt, liens, share repurchases and investments, and require achieving a minimum fixed charge coverage ratio with respective performance metrics as defined by the Credit Agreement if a minimum availability is not met. On July 31, 2017, the Company was in compliance with all covenants under the Credit Agreement. The North American revolving line balances as of July 31, 2017 and January 31, 2017 were included as current liabilities in the consolidated balance sheets, because the Credit Agreement has a subjective acceleration clause.

Interest rates vary based on the average availability in the preceding fiscal quarter and are: (a) a margin in effect plus a base rate, if below certain availability limits; or (b) a margin in effect plus the Eurodollar rate for the corresponding interest period. On July 31, 2017, the Company had borrowed $7.9 million at 5.5% and 4.2% and had $4.8 million available to it under the revolving line of credit. In addition, $0.2 million of availability was used under the Credit Agreement primarily to support letters of credit to guarantee amounts committed for inventory purchases. Cash required for operations, as needed, is provided by draw downs on the line of credit.

Revolving lines foreign. The Company also had credit arrangements used by its Middle Eastern subsidiaries. These credit arrangements are in the form of overdraft facilities and project financing at rates competitive in the countries in which the Company operates. Some credit arrangement covenants require a minimum tangible net worth to be maintained, including intercompany subordinated debt. In addition, some of the revolving credit facilities restrict payment of dividends. On July 31, 2017, the Company was in compliance with the covenants under the credit arrangements. On July 31, 2017, interest rates were based on the Emirates Inter Bank Offered Rate (EIBOR) plus 3.5% per annum, with a minimum interest rate of 4.5% per annum. On July 31, 2017, the Company's interest rates ranged from 5.0% to 6.5%, and the Company could borrow $23.0 million under these credit arrangements. On July 31, 2017, $7.5 million of availability was used to support letters of credit to guarantee amounts committed for inventory purchases and for performance guarantees. As there were no borrowings under these credit arrangements, an additional $15.5 million remained unused. The foreign revolving lines balances as of January 31, 2017 were included as current maturities of long-term debt in the consolidated balance sheets.

On May 5, 2017, Piping Systems obtained two capital leases for a total of 0.94 million CAD (approximately $0.7 million USD at the prevailing exchange rate on the transaction date) to finance vehicle equipment. The interest rate for these capital leases is 7.8% per annum with monthly principal and interest payments of $9 thousand, and these leases mature on April 30, 2021.