XML 39 R23.htm IDEA: XBRL DOCUMENT
v3.8.0.1

CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE | 12 Months Ended
--- | ---
Jan. 31, 2018
CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE |
CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE | NOTE 17 — CONCENTRATIONS OF REVENUES AND ACCOUNTS RECEIVABLE The majority of the Company’s consolidated revenues related to performance by the power industry services segment which provided 91%, 87% and 94% of consolidated revenues for the years ended January 31, 2018, 2017 and 2016, respectively. For the year ended January 31, 2018, the Company’s most significant customer relationships included four power industry service customers which accounted for 29%, 26%, 15% and 14% of consolidated revenues, respectively. For the year ended January 31, 2017, the Company’s most significant customer relationships included five power industry service customers which accounted for 20%, 18%, 17%, 14% and 10% of consolidated revenues, respectively. For the year ended January 31, 2016, the Company’s most significant customer relationships included two power industry service customers which accounted for 38% and 35% of consolidated revenues, respectively. Accounts receivable balances from four major customers represented 20%, 20%, 15% and 14% of the corresponding consolidated balance as of January 31, 2018, and accounts receivable balances from four major customers represented 18%, 17%, 17% and 11% of the corresponding consolidated balance as of January 31, 2017.

X
- 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 -URI http://asc.fasb.org/topic&trid=2134479 + Details
Name: | us-gaap_ConcentrationRiskDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration