Goodwill and Other Intangible Assets (Details Textual) (USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
Dec. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Goodwill and Other Intangible Assets (Textual) [Abstract]
Goodwill impairment	$ 1.9	$ 0.1	$ 0.3	$ 1.9	$ 0.4
Amortization expense				0.1	0.1	0.5
2013	0.1			0.1
2014	0.1			0.1
2015	0.1			0.1
2016	0.1			0.1
2017	0.1			0.1
Thereafter	$ 0.3			$ 0.3

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. Goodwill is assessed at least annually for impairment.

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