Interim Condensed Consolidated Balance Sheets (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 14,379	$ 17,098
Short term bank deposits	42,945	24,807
Marketable securities (see Note 3)	80,167	73,874
Trade receivables (net of allowance for doubtful accounts of $25 at both June 30, 2011 and December 31, 2010)	3,622	5,906
Deferred tax assets	2,355	1,288
Prepaid expenses and other accounts receivable	5,186	4,609
Total current assets	148,654	127,582
Long term bank deposit	15,277	15,173
Severance pay fund	5,858	5,433
Deferred tax assets	839	574
Property and equipment, net	1,308	1,348
Goodwill	36,498	36,498
Total long-term assets	59,780	59,026
Total assets	208,434	186,608
Current liabilities:
Trade payables	850	616
Deferred revenues	3,646	616
Accrued expenses and other payables	9,535	10,521
Deferred tax liabilities	597	901
Total current liabilities	14,628	12,654
Long term liabilities:
Accrued severance pay	5,902	5,486
Stockholders' equity:
Common Stock $0.001 par value: 60,000,000 shares authorized; 23,346,704 and 22,524,449 shares issued and outstanding at June 30, 2011 and December 31, 2010, respectively	23	23
Additional paid in-capital	187,378	176,838
Accumulated other comprehensive income	439	317
Retained earnings (accumulated deficit)	64	(8,710)
Total stockholders' equity	187,904	168,468
Total liabilities and stockholders' equity	$ 208,434	$ 186,608