Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jan. 31, 2015	Jan. 31, 2014
Current assets:
Cash and cash equivalents	$ 90,019	$ 115,734
Restricted cash	1,073
Marketable securities	7,516	5,555
Accounts and other receivables, net of allowance for doubtful accounts of $400 and $327 at January 31, 2015 and January 31, 2014, respectively	24,962	30,203
Unbilled receivables	6,588	5,511
Inventories, net	2,864	6,632
Prepaid expenses and other current assets	3,026	5,242
Total current assets	136,048	168,877
Property and equipment, net	15,869	18,530
Marketable securities, long-term	6,793	6,814
Investments in affiliates	3,051	1,051
Intangible assets, net	7,314	12,855
Goodwill	41,008	45,150
Other assets	2,268	836
Total assets	212,351	254,113
Current liabilities:
Accounts payable	5,129	6,640
Other accrued expenses	12,507	12,332
Deferred revenues	17,398	24,030
Total current liabilities	35,034	43,002
Deferred revenue, long-term	1,690	1,598
Other liabilities, long-term	1,493	936
Taxes payable, long-term	1,993	2,503
Deferred tax liabilities, long-term	1,090	1,633
Total liabilities	41,300	49,672
Commitments and contingencies (Note 8)
Stockholders' equity:
Common stock, $0.01 par value;100,000,000 shares authorized; 32,733,636 shares issued and 32,693,852 outstanding at January 31, 2015, and 33,037,671 shares issued and 32,997,887 outstanding at January 31, 2014	327	330
Additional paid-in capital	219,651	221,932
Treasury stock, at cost; 39,784 common shares	(1)	(1)
Accumulated loss	(43,172)	(15,688)
Accumulated other comprehensive loss	(5,754)	(2,132)
Total stockholders' equity	171,051	204,441
Total liabilities and stockholders' equity	$ 212,351	$ 254,113