CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2020	Jan. 31, 2019	Jan. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net (loss) income	$ (40,712)	$ 51,869	$ 72,346
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities
Impairment losses (Note 7)	4,895	1,491	584
Depreciation	3,513	3,422	2,779
Stock compensation expense	2,131	1,645	4,651
Amortization of purchased intangible assets	1,136	1,012	1,032
Operating lease expense	1,004
Change in accrued interest on short-term investments	714	695	(1,112)
Deferred income tax benefit	(6,640)	(2,139)	(64)
Other	175	(996)	(136)
Changes in operating assets and liabilities
Accounts receivable	(1,038)	(10,200)	(5,687)
Contract assets	24,978	(44,510)	(6,646)
Other assets	2,357	(15,160)	(4,574)
Accounts payable and accrued expenses	(3,284)	(60,187)	(6,164)
Contract liabilities	64,336	(39,264)	(129,802)
Net cash provided by (used in) operating activities	53,565	(112,322)	(72,793)
CASH FLOWS FROM INVESTING ACTIVITIES
Maturities of short-term investments	166,000	370,000	587,500
Purchases of short-term investments	(195,000)	(191,000)	(542,500)
Purchases of property, plant and equipment	(7,058)	(8,599)	(4,826)
Changes in notes receivable		225	(1,500)
Net cash (used in) provided by investing activities	(36,058)	170,626	38,674
CASH FLOWS FROM FINANCING ACTIVITIES
Payments of cash dividends	(15,621)	(15,570)	(15,548)
Proceeds from the exercise of stock options	1,630	102	3,155
Distributions to joint venture partners		(72)	(1,229)
Net cash used in financing activities	(13,991)	(15,540)	(13,622)
EFFECTS OF EXCHANGE RATE CHANGES ON CASH	(471)	(553)	2,650
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	3,045	42,211	(45,091)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	164,318	122,107	167,198
CASH AND CASH EQUIVALENTS, END OF YEAR	167,363	164,318	122,107
SUPPLEMENTAL CASH FLOW INFORMATION (Notes 2, 10 and 13)
Cash paid for income taxes	3,100	3,900	44,300
Cash received from income tax refunds	8,400	$ 0	$ 0
Operating lease payments made	$ 1,000

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- Definition

The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Data Type:	xbrli:monetaryItemType
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Period Type:	duration

- References

No definition available.

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