Debt (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Debt outstanding
Debt	$ 26,731	$ 37,167
7.625% contingent convertible senior notes (the "Old Notes") [Member]
Debt outstanding
Current Outstanding Par	100
Debt	100	10,303
Interest Rate Terms	7.63%
Weighted Average Interest Rate	7.63%
Weighted Average Contractual Maturity	July 2012
10.50% contingent convertible senior notes (the "New Notes") [Member]
Debt outstanding
Current Outstanding Par	8,121
Debt	8,049	8,030
Interest Rate Terms	10.50%
Weighted Average Interest Rate	10.50%
Weighted Average Contractual Maturity	May 2014
Contingent convertible senior notes [Member]
Debt outstanding
Current Outstanding Par	8,221
Debt	8,149	18,333
Junior subordinated debt [Member]
Debt outstanding
Current Outstanding Par	48,125
Debt	17,068	17,343
Interest Rate Terms	7.47%
Weighted Average Interest Rate	7.47%
Weighted Average Contractual Maturity	August 2036
Subordinated notes payable [Member]
Debt outstanding
Current Outstanding Par	1,514
Debt	$ 1,514	$ 1,491
Interest Rate Terms	12.00%
Weighted Average Interest Rate	12.00%
Weighted Average Contractual Maturity	June 2013