Commitments and Contingencies (Details Textual) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Operating Leases, Rent Expense, Net	$ 2.3	$ 2.0	$ 1.8
Payments of Assessment	0.1	0	0
Contingent Liability Premium Taxes	4.5
Contingent Liability Penalties and Interest	$ 0.9