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Condensed Consolidated Statement of Operations (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Share-based Compensation			$ 4,425	$ 4,436
Allocated Share-based Compensation Expense	2,155	2,231	4,448	4,436
Cost of Goods Sold, Subscription	16,187	15,158	32,051	30,950
Cost Of Revenues [Member]
Allocated Share-based Compensation Expense	192	246	434	490
Sales And Marketing [Member]
Allocated Share-based Compensation Expense	352	351	727	699
Research, Development And Engineering [Member]
Allocated Share-based Compensation Expense	117	110	233	257
General And Administrative [Member]
Allocated Share-based Compensation Expense	$ 1,494	$ 1,524	$ 3,054	$ 2,990

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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