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REVENUE RECOGNITION - Impact of the Adoption of the New Accounting Standard (Details) - USD ($) $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Jul. 31, 2018 | Jul. 31, 2017 | Feb. 01, 2018 | Jan. 31, 2018
Impact of the Adoption of the New Accounting Standard |  |  |  |
Retained amounts by project owners | $ 23,400 |  |  | $ 69,700
Accounts receivable, net | 46,137 |  |  | 24,756
Contract assets | 34,792 |  |  | 13,847
Contract liabilities | 24,385 |  |  | 47,613
Deferred taxes | 2,146 |  |  | 1,293
Retained earnings | 225,174 |  |  | 211,150
Change in contracts in progress, net | 44,173 | $ 44,387 |  |
Balances Reported Previously |  |  |  |
Impact of the Adoption of the New Accounting Standard |  |  |  |
Accounts receivable, net |  |  |  | 94,440
Costs and estimated earnings in excess of billings |  |  |  | 4,887
Billings in excess of costs and estimated earnings |  |  |  | 108,388
Deferred taxes |  |  |  | 1,279
Retained earnings |  |  |  | 211,112
Impact of the Adoption of ASC Topic 606 |  |  |  |
Impact of the Adoption of the New Accounting Standard |  |  |  |
Capitalized project costs, net | 600 |  |  | 1,700
Accounts receivable, net |  |  |  | (69,684)
Costs and estimated earnings in excess of billings |  |  |  | (4,887)
Contract assets |  |  |  | 13,847
Billings in excess of costs and estimated earnings |  |  |  | (108,388)
Contract liabilities |  |  |  | 47,613
Deferred taxes |  |  |  | 13
Retained earnings |  |  |  | 38
Change in contracts in progress, net | 44,200 | 44,400 |  |
Decline in the amounts of billings in excess of costs and estimated earnings | (62,800) | (23,700) |  |
Increase in costs and estimated earnings in excess of billings | 24,500 |  |  |
Increase (Decrease) in Customer Retainages | 46,300 | $ 20,700 |  |
Impact of the Adoption of ASC Topic 606 | Maximum |  |  |  |
Impact of the Adoption of the New Accounting Standard |  |  |  |
Retained earnings |  |  | $ 100 |
Impact of the Adoption of ASC Topic 606 | Contract assets |  |  |  |
Impact of the Adoption of the New Accounting Standard |  |  |  |
Retained amounts by project owners | $ 23,400 |  |  | $ 69,700

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