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Leases (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Leases (Textual) [Abstract]
Rental expense	$ 3.7	$ 3.9	$ 2.9
Future minimum rental commitments, 2013	2.4
Future minimum rental commitments, 2014	1.7
Future minimum rental commitments, 2015	0.5
Future minimum rental commitments, 2016	0.2
Future minimum rental commitments, 2017	0.1
Future minimum rental commitments, Thereafter	8.6
Future minimum rental commitments for capital leases, 2013	0.2
Future minimum rental commitments for capital leases, 2014	0.1
Future minimum rental commitments for capital leases, 2015	0.1
Future minimum rental commitments for capital leases, 2016	less than .1 million
Future minimum rental commitments for capital leases, 2017	less than .1 million
Imputed interest	$ 0.1

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Amount of minimum lease payments maturing in the next fiscal year following the latest fiscal year for capital leases.

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