Discontinued Operations (Schedule of Assets and Liabilities Included in Discontinued Operations) (Details) (USD $) In Thousands, unless otherwise specified	Jul. 31, 2012	Jan. 31, 2012
ASSETS
Total current assets	$ 43,357	$ 40,773
LIABILITIES
Total current liabilities	28,003	27,984
Starhome Disposition
ASSETS
Cash and cash equivalents	29,349	32,466
Accounts receivable, net of allowance of $142 and $105, respectively	9,718	3,832
Inventories	2,861	2,716
Deferred cost of revenue	669	888
Prepaid expenses and other current assets	760	871
Total current assets	43,357	40,773
Property and equipment, net	1,123	1,173
Goodwill	7,559	7,559
Deferred cost of revenue	144	229
Total assets	52,183	49,734
LIABILITIES
Accounts payable and accrued expenses	9,412	9,959
Deferred revenue	18,454	17,912
Income taxes payable	137	113
Total current liabilities	28,003	27,984
Deferred revenue	1,877	2,683
Other long-term liabilities	2,939	2,747
Total liabilities	32,819	33,414
Allowance for doubtful accounts receivable	$ 142	$ 105