Restatement Of March 2011 Unaudited Quarterly Financial Information (Restatement Of 2011 First Quarter Balance Sheet Information To Reflect The Final Measurement Of The Fair Value Of The Assets Acquired) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2011
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net assets	$ 57,594
Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net assets	61,936
Adjustments [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net assets	$ (4,342)