CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOW (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Oct. 31, 2013	Oct. 31, 2012
Cash flow from operating activities:
Net loss	$ (113,794)	$ (11,210)
Adjustments to reconcile net loss to cash flow from operating activities:
Depreciation and amortization	45,745	49,276
(Gain) loss on disposal of discontinued operations	(8,333)	32,589
Loss on remeasurement of equity investment		7,705
Deferred income taxes	47,900	(17,328)
Share-based compensation	2,535	3,093
Equity in losses (earnings) of affiliates	4,088	(19,069)
Impairment charges	14,646
Dividends received from affiliates	6,129	5,523
Gain from disposal of property and equipment	(4,716)	(2,816)
Changes in current assets and liabilities, net of effects of acquisitions:
Decrease (increase) in customer receivables	28,424	(1,814)
Decrease (increase) in costs and estimated earnings in excess of billings on uncompleted contracts	1,254	(6,383)
Decrease (increase) in inventories	2,663	(6,335)
Increase in other current assets	(4,659)	(3,567)
Decrease in accounts payable and accrued expenses	(23,846)	(28,999)
Decrease in billings in excess of costs and estimated earnings on uncompleted contracts	(2,258)	(4,286)
Other, net	1,072	2,829
Cash used in operating activities	(3,150)	(792)
Cash flow from investing activities:
Additions to property and equipment	(25,479)	(54,848)
Additions to gas transportation facilities and equipment		(58)
Additions to oil and gas properties		(1,512)
Additions to mineral interests in oil and gas properties		(102)
Acquisition of businesses, net of cash acquired		(18,397)
Proceeds from disposal of property and equipment	7,717	3,421
Proceeds from sale of business	12,064	13,500
Proceeds from redemption of insurance contracts	3,565
Release of cash from restricted accounts		3,144
Distribution of restricted cash for prior year acquisitions		(3,144)
Cash used in investing activities	(2,133)	(57,996)
Cash flow from financing activities:
Borrowing under revolving loan facilities	286,161	375,200
Repayments under revolving loan facilities	(275,116)	(311,200)
Net decrease in notes payable	(959)	(348)
Deferred financing costs	(397)
Principal payments under capital lease obligation	(556)	(69)
Acquisition of noncontrolling interest		(2,743)
Distribution to noncontrolling interests	(1,683)	(1,247)
Issuance of common stock upon exercise of stock options	1,105	269
Purchases of treasury stock	(52)
Cash provided by financing activities	8,503	59,862
Effects of exchange rate changes on cash	(1,474)	1,335
Net increase in cash and cash equivalents	1,746	2,409
Cash and cash equivalents at beginning of period	27,242	41,916
Cash and cash equivalents at end of period	$ 28,988	$ 44,325