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Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Interest Expense, Subordinated Notes and Debentures	$ 43.0
William Klawonn [Member]
Loss Contingency, Period of Occurrence	45 days
Loss Contingency, Lawsuit Filing Date	January 20, 2011

States the date the complaint was formally filed in a court of law, in arbitration or mediation.

States when the existing condition, situation, or set of circumstances involving uncertainty occurred.