Fair Value Measurements (Tables)

6 Months Ended

Sep. 30, 2012

Fair Value Measurements [Abstract]

Financial Assets And Liabilities Measured At Fair Value On Recurring Basis

	September 30, 2012
(in thousands of dollars)	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	1,525	$	—	$	—	$	1,525
Trading securities associated with deferred compensation plans	18,881		—		—		18,881
Forward foreign currency exchange contracts	—		230		—		230
Total assets	$	20,406	$	230	$	—	$	20,636
Liabilities
Guarantees of bank loans to tobacco growers	$	—	$	—	$	2,327	$	2,327
Interest rate swap agreements	—		2,117		—		2,117
Forward foreign currency exchange contracts	—		43		—		43
Total liabilities	$	—	$	2,160	$	2,327	$	4,487

	September 30, 2011
(in thousands of dollars)	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	1,523	$	—	$	—	$	1,523
Trading securities associated with deferred compensation plans	17,192		—		—		17,192
Interest rate swap agreements	—		—		—		—
Forward foreign currency exchange contracts	—		13		—		13
Total assets	$	18,715	$	13	$	—	$	18,728
Liabilities
Guarantees of bank loans to tobacco growers	$	—	$	—	$	13,236	$	13,236
Forward foreign currency exchange contracts	—		930		—		930
Total liabilities	$	—	$	930	$	13,236	$	14,166

	March 31, 2012
(in thousands of dollars)	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	48,546	$	—	$	—	$	48,546
Trading securities associated with deferred compensation plans	19,803		—		—		19,803
Forward foreign currency exchange contracts	—		356		—		356
Total assets	$	68,349	$	356	$	—	$	68,705
Liabilities
Guarantees of bank loans to tobacco growers	$	—	$	—	$	5,932	$	5,932
Interest rate swap agreements	—		1,119		—		1,119
Forward foreign currency exchange contracts	—		1,352		—		1,352
Total liabilities	$	—	$	2,471	$	5,932	$	8,403

Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

	Six Months Ended September 30,
(in thousands of dollars)	2012			2011
Balance at beginning of year	$	5,932		$	20,699
Transfer to allowance for loss on direct loans to farmers (removal of prior crop year and other loans from portfolio)	(5,651		)	(8,979		)
Transfer from allowance for loss on direct loans to farmers (addition of current crop year loans)	2,197			2,556
Change in discount rate and estimated collection period	37			615
Currency remeasurement	(188		)	(1,655		)
Balance at end of period	$	2,327		$	13,236