Shareholders' Equity (Details)	Dec. 31, 2013	Dec. 31, 2012
Equity [Abstract]
Preferred stock, shares authorized	10,000,000	10,000,000
Common stock, shares authorized	151,515,151	151,515,151
Common stock, shares outstanding	62,363,741	62,207,529
Common Stock, Shares, Issued		62,176,628
Class of Warrant or Right, Number of Securities Called by Warrants or Rights	2,902,566	2,749,044
Class of Warrant or Right, Exercise Price of Warrants or Rights	13.13	13.86