Stockholders' Equity - Common shares (Details)	0 Months Ended				12 Months Ended
	Jul. 19, 2013	Sep. 28, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Common Stock [Member]	Dec. 31, 2012 Common Stock [Member]	Dec. 31, 2011 Common Stock [Member]
Reconciliation of the beginning and ending common stock outstanding
Balance, beginning of year			95,924,000	87,514,000	87,514,336	77,843,883	66,071,424
Issuance of common stock	3,000,000	9,200,000			8,293,369	9,275,895	11,681,392
Non-vested stock-based awards, net of forfeitures					116,634	394,558	91,067
Balance, end of year			95,924,000	87,514,000	95,924,339	87,514,336	77,843,883