Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Apr. 30, 2015	Jan. 31, 2015
Current assets:
Cash and cash equivalents	$ 72,971	$ 90,019
Restricted cash		1,073
Marketable securities	3,507	7,516
Accounts and other receivables, net of allowance for doubtful accounts of $451 and $400 at April 30, 2015 and January 31, 2015, respectively	16,989	24,962
Unbilled receivables	9,380	6,588
Inventories, net	2,918	2,864
Prepaid expenses and other current assets	4,152	3,026
Total current assets	109,917	136,048
Property and equipment, net	15,349	15,869
Marketable securities, long-term	8,783	6,793
Investments in affiliates	3,081	3,051
Intangible assets, net	12,862	7,314
Goodwill	58,134	41,008
Other assets	1,621	2,268
Total assets	209,747	212,351
Current liabilities:
Accounts payable	5,199	5,129
Deferred stock consideration	6,739
Other accrued expenses	10,889	12,507
Deferred revenues	15,804	17,398
Total current liabilities	38,631	35,034
Deferred revenue, long-term	1,538	1,690
Other liabilities, long-term	1,855	1,493
Taxes payable, long-term	1,975	1,993
Deferred tax liabilities, long-term	1,073	1,090
Total liabilities	45,072	41,300
Commitments and contingencies (Note 6)
Stockholders' equity:
Common stock, $0.01 par value; 100,000,000 shares authorized; 33,379,641 shares issued and 33,339,857 outstanding at April 30, 2015, and 32,733,636 shares issued and 32,693,852 outstanding at January 31, 2015	334	327
Additional paid-in capital	223,382	219,651
Treasury stock, at cost; 39,784 common shares	(1)	(1)
Accumulated loss	(52,997)	(43,172)
Accumulated other comprehensive loss	(6,043)	(5,754)
Total stockholders' equity	164,675	171,051
Total liabilities and stockholders' equity	$ 209,747	$ 212,351