Fair Value (Tables)

9 Months Ended

Oct. 31, 2015

Fair Value Disclosures [Abstract]

Company's Assets and Liabilities Measured at Fair Value

The three levels of the hierarchy and the distribution within it of the Company’s assets and liabilities, measured at fair value on a recurring basis, were as follows:

	Assets and Liabilities at Fair Value as of October 31, 2015
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	79,212	$	—	$	—	$	79,212
Derivative financial instruments	—		1,769		—		1,769
Total assets measured at fair value	$	79,212	$	1,769	$	—	$	80,981
Liabilities:
Derivative financial instruments	—		396		—		396
Total liabilities measured at fair value	$	—	$	396	$	—	$	396

	Assets and Liabilities at Fair Value as of January 31, 2015
(in thousands)	Level 1		Level 2		Level 3		Total
Assets:
Money market funds	$	122,047	$	—	$	—	$	122,047
Derivative financial instruments	—		10,293		—		10,293
Total assets measured at fair value	$	122,047	$	10,293	$	—	$	132,340
Liabilities:
Derivative financial instruments	—		—		—		—
Total liabilities measured at fair value	$	—	$	—	$	—	$	—