Acquisitions (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Purchase price allocation:
Purchase price, net of cash acquired	$ 65,150,000
Aggregate costs of several smaller acquisitions		12,000,000
Consolidated impact of acquisitions [Abstract]
Business Acquisitions, Pro Forma Revenue	5,452,000	5,620,000
Portrait Software plc [Member]
Purchase price allocation:
Current assets	7,919,000
Other non-current assets	6,940,000
Intangible assets	31,332,000
Goodwill	42,766,000
Current liabilities	(13,014,000)
Non-current liabilities	$ (10,793,000)