Consolidated Condensed Statements Of Cash Flows (USD $) In Thousands	6 Months Ended
	Jul. 31, 2011	Jul. 31, 2010
Cash flows from operating activities:
Net income including noncontrolling interests	$ 7,589	$ 6,699
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	5,519	7,646
Impairment charges and other	1,153	510
Income from equity method investments	(9,543)	(3,930)
Income from synthetic fuel investments	(2,883)
(Gain) loss on disposal of real estate and property and equipment	(271)	28
Dividends received from equity method investees	2,316	802
Deferred income	(2,367)	(4,422)
Derivative financial instruments	(608)	335
Deferred income tax	2,859	1,375
Changes in assets and liabilities:
Accounts receivable	1,738	231
Inventory	(2,551)	2,326
Other assets	9,890	7,412
Accounts payable, trade	(1,652)	(869)
Other liabilities	1,665	(2,154)
Net cash provided by operating activities	12,854	15,989
Cash flows from investing activities:
Capital expenditures	(637)	(918)
Proceeds from sale of synthetic fuel investment	2,883
Purchase of equity method investment		(9,216)
Principal payments received on investment in debt instruments		933
Proceeds from sale of real estate and property and equipment	1,603	1,540
Restricted investments		500
Net cash provided by (used in) investing activities	3,849	(7,161)
Cash flows from financing activities:
Payments of long-term debt and capital lease obligations	(5,136)	(17,737)
Repayments of contingent consideration	(1,313)
Stock options exercised	312	1,438
Payments to noncontrolling interests holders	(1,796)
Other	(192)
Treasury stock acquired	(3,162)	(3,311)
Net cash used in financing activities	(11,287)	(19,610)
Net increase (decrease) in cash and cash equivalents	5,416	(10,782)
Cash and cash equivalents, beginning of period	91,019	100,398
Cash and cash equivalents, end of period	96,435	89,616
Non cash activities - Accrued capital expenditures	$ 440	$ 102