Fair Value of Financial Instruments (Tables)

6 Months Ended

Jul. 31, 2014

Jul. 31, 2013

Fair Value Disclosures [Abstract]

Financial Assets and Liabilities Carried at Fair Value

Financial assets and liabilities carried at fair value at July 31, 2014 are classified in the table below in one of the three categories described above: 

			Estimated Fair Value
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Total Fair Value
Marketable securities a	$	53,362	$	53,362	$	—	$	—	$	53,362
Derivatives designated as hedging instruments:
Precious metal forward contracts b	663		—		663		—		663
Foreign exchange forward contracts b	3,354		—		3,354		—		3,354
Total financial assets	$	57,379	$	53,362	$	4,017	$	—	$	57,379

			Estimated Fair Value
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Total Fair Value
Derivatives designated as hedging instruments:
Precious metal forward contracts c	$	241	$	—	$	241	$	—	$	241
Foreign exchange forward contracts c	226		—		226		—		226
Total financial liabilities	$	467	$	—	$	467	$	—	$	467

Financial assets and liabilities carried at fair value at July 31, 2013 are classified in the table below in one of the three categories described above:

			Estimated Fair Value
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Total Fair Value
Marketable securities a	$	49,343	$	49,343	$	—	$	—	$	49,343
Derivatives designated as hedging instruments:
Precious metal forward contracts b	212		—		212		—		212
Foreign exchange forward contracts b	18,744		—		18,744		—		18,744
Total financial assets	$	68,299	$	49,343	$	18,956	$	—	$	68,299

			Estimated Fair Value
(in thousands)	Carrying Value		Level 1		Level 2		Level 3		Total Fair Value
Derivatives designated as hedging instruments:
Precious metal forward contracts c	$	3,470	$	—	$	3,470	$	—	$	3,470
Foreign exchange forward contracts c	617		—		617		—		617
Total financial liabilities	$	4,087	$	—	$	4,087	$	—	$	4,087

aIncluded within Other assets, net.

bIncluded within Prepaid expenses and other current assets.

cIncluded within Accounts payable and accrued liabilities.