Summary Of Significant Accounting Policies Cash and cash equivalents (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Cash and Cash Equivalents, at Carrying Value	$ 40,402	$ 40,315	$ 40,499	$ 46,168
Foreign Subsidiaries [Member]
Cash and Cash Equivalents, at Carrying Value	$ 3,100