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CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE	6 Months Ended
	Jul. 31, 2017
CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE
CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE	NOTE 13 — CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE During the three and six months ended July 31, 2017 and 2016, the majority of the Company’s consolidated revenues related to performance by the power industry services segment which provided 92% and 88% of consolidated revenues for the three months ended July 31, 2017 and 2016, respectively, and 92% and 86% of consolidated revenues for the six months ended July 31, 2017 and 2016, respectively. The Company’s significant customer relationships for the three months ended July 31, 2017 included four power industry service customers which accounted for approximately 31%, 27%, 17% and 13% of consolidated revenues, respectively. The Company’s significant customer relationships for the three months ended July 31, 2016 included five customers which accounted for approximately 17%, 17%, 16%, 14% and 13% of consolidated revenues, respectively. The Company’s significant customer relationships for the six months ended July 31, 2017 included four power industry service customers which accounted for approximately 28%, 26%, 19% and 15% of consolidated revenues, respectively. The Company’s significant customer relationships for the six months ended July 31, 2016 included five customers which accounted for approximately 17%, 16%, 14%, 13% and 13% of consolidated revenues, respectively. Accounts receivable balances from four major customers as of July 31, 2017 represented 22%, 22%, 17% and 15% of the corresponding condensed consolidated balance as of July 31, 2017, and accounts receivable balances from four major customers represented 18%, 17%, 17% and 11% of the corresponding consolidated balance as of January 31, 2017.

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- Definition

The entire disclosure for any concentrations existing at the date of the financial statements that make an entity vulnerable to a reasonably possible, near-term, severe impact. This disclosure informs financial statement users about the general nature of the risk associated with the concentration, and may indicate the percentage of concentration risk as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6327-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6442-108592

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=64851502&loc=d3e6351-108592

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13537-108611

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