Shareholders' Equity Restricted Stock (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Stock Issued During Period, Shares, Restricted Stock Award, Gross	329,698	177,492
Stock Issued During Period, Value, Restricted Stock Award, Gross	$ 2,511,700	$ 1,127,900
weighted average estimated fair value of restricted stock	$ 7.62	$ 6.35