Summary Of Significant Accounting Policies (Unbilled Accounts Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Unbilled accounts receivable	$ 80,718us-gaap_UnbilledReceivablesCurrent	$ 81,059us-gaap_UnbilledReceivablesCurrent

Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.

No definition available.

Name:	us-gaap_UnbilledReceivablesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant