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Subsequent Event	6 Months Ended
Subsequent Event	Jun. 30, 2014
Subsequent Events [Abstract]
Subsequent Event [Text Block]	Subsequent Event Stock Repurchases Subsequent to June 30, 2014, we repurchased 79,500 shares of our common stock under the stock repurchase program authorized by the Board of Directors on February 7, 2014. The average price paid per share was $39.46.