Summary of Significant Accounting Policies (Held-to-Maturity Securities) (Details) (USD $)			3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2012 Banco Santander Bonds [Member]	Mar. 23, 2012 Banco Santander Bonds [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost (Net Carrying Amount)	$ 50,000,000		$ 50,000,000	$ 50,000,000
Premium on held-to-maturity securities	175,000		175,000	200,000
Premium Amortization	11,000		11,000
Amortized Cost	50,164,000	0	50,164,000
Accrued Investment Income Receivable				$ 500,000
Interest income rate (as a percent)			2.90%