XML 75 R53.htm IDEA: XBRL DOCUMENT

Certain Balance Sheet Components Accounts Receivable, Net (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Accounts Receivable, Net (Line Items]
Trade receivables, net of allowance	$ 329,352	$ 328,845
Unbilled Contracts Receivable	45,974	42,796
Total accounts receivable, net	375,326	371,641
Allowance for Doubtful Accounts	$ 7,372	$ 6,049	$ 9,045

Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ References+ Details