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Share Repurchase Program (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Share Repurchase Program (Textual) [Abstract]
Common stock amount authorized under repurchase program			$ 50.0
Common Stock Repurchased During Period, Shares	462,787	774,327	930,225	841,027
Average Stock Price of Shares Repurchased During Period	$ 9.12	$ 10.06	$ 8.94	$ 10.17
Common Stock Repurchased, Shares	4,211,652		4,211,652
Average Stock Price of Shares Repurchased	$ 6.83
Additional Common Stock Repurchase, Value	$ 21.1

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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