Business Combination (Acquisition Of Proginet Corporation) (Details) (Proginet Corporation [Member], USD $)	0 Months Ended	3 Months Ended
	Sep. 15, 2010	Aug. 31, 2011
Increase (decrease) in goodwill as a result of the adjustment of deferred income tax assets		$ 200,000
Acquisition related expenses	600,000
Cash	931,000
Accounts receivable (approximate contractual value)	1,126,000
Deferred income tax assets (liabilities), net	946,000
Other assets	131,000
Identifiable intangible assets	12,200,000
Goodwill	9,869,000
Liabilities	(3,217,000)
Total preliminary purchase price	21,986,000
Weighted average amortization period (in years)	6.2
Goodwill acquired deductible for income tax purposes	0
Existing Technology [Member]
Identifiable intangible assets	6,700,000
Weighted average amortization period (in years)	6.0
Customer Base [Member]
Identifiable intangible assets	1,400,000
Weighted average amortization period (in years)	7.0
Trademarks [Member]
Identifiable intangible assets	100,000
Weighted average amortization period (in years)	4.0
Core Technology [Member]
Identifiable intangible assets	2,300,000
Weighted average amortization period (in years)	5.0
Maintenance Agreements [Member]
Identifiable intangible assets	$ 1,700,000
Weighted average amortization period (in years)	8.0