SUBSEQUENT EVENTS (Detail Textuals) (USD $)	3 Months Ended												12 Months Ended			0 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Mar. 03, 2014 Subsequent Event
Subsequent Event [Line Items]
Cash dividend declared per share	$ 0.14	$ 0.14	$ 0.14	$ 0.15	$ 0.13	$ 0.13	$ 0.13	$ 0.13	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.56	$ 0.52	$ 0.48	$ 0.15
Dividends payable, declared date																Mar. 03, 2014
Dividends payable, payment date																Mar. 24, 2014
Dividends payable record date	Dec. 09, 2013	Sep. 16, 2013	Jun. 17, 2013	Mar. 18, 2013	Dec. 10, 2012	Sep. 17, 2012	Jun. 18, 2012	Mar. 19, 2012	Dec. 05, 2011	Aug. 19, 2011	May 23, 2011	Mar. 17, 2011				Mar. 17, 2014