Net Income Per Share of Common Stock (Details)	3 Months Ended							12 Months Ended
	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
NET INCOME PER SHARE OF COMMON STOCK [Abstract]
Common Stock Dividend Declared, Percent								2.50%	20.00%	10.00%
Average shares outstanding	15,507,191	15,577,599	15,634,284	12,946,278	12,973,095	13,021,478	13,012,497	15,935,751	15,969,060	15,837,597