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Condensed Consolidated Statements of Cash Flows (USD $) | 6 Months Ended
--- | ---
Jul. 31, 2014 | Jul. 31, 2013
CASH FLOWS FROM OPERATING ACTIVITIES |  |
Net income | $ 16,821,000 | $ 20,863,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities: |  |
Gains on the deconsolidation of variable interest entities | 0 | (2,444,000)
Deferred income tax (benefit) expense | (125,000) | 1,214,000
Stock option compensation expense | 968,000 | 759,000
Depreciation | 283,000 | 265,000
Amortization of purchased intangibles | 121,000 | 121,000
Changes in operating assets and liabilities |  |
Accounts receivable, net | (10,766,000) | 9,880,000
Costs and estimated earnings in excess of billings | 97,000 | 740,000
Prepaid expenses and other assets | (1,098,000) | (2,194,000)
Accounts payable and accrued expenses | 18,037,000 | (15,331,000)
Billings in excess of costs and estimated earnings | 46,848,000 | (33,284,000)
Net cash provided by (used in) operating activities | 71,186,000 | (19,411,000)
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Purchases of property, plant and equipment | (199,000) | (851,000)
Net cash used in investing activities | (199,000) | (851,000)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Net proceeds from the exercise of stock options | 2,282,000 | 149,000
Increase in notes receivable | (320,000) | (1,713,000)
Deconsolidation of the cash of variable interest entities | 0 | (399,000)
Net cash provided by (used in) financing activities | 1,962,000 | (1,963,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS | 72,949,000 | (22,225,000)
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD | 272,209,000 | 175,142,000
CASH AND CASH EQUIVALENTS, END OF PERIOD | 345,158,000 | 152,917,000
SUPPLEMENTAL CASH FLOW INFORMATION |  |
Cash paid for income taxes | $ 5,153,000 | $ 9,385,000

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