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Subsequent Events (Notes)	6 Months Ended
Subsequent Events (Notes)	Jun. 30, 2013
Subsequent Events [Abstract]
Subsequent Events [Text Block]	(18) Subsequent Events On July 24, 2013, the Company's Board of Directors declared a quarterly cash dividend of $0.25 per share of common stock. The dividend is payable on August 15, 2013 to shareholders of record on August 5, 2013.