SUBSEQUENT EVENTS (Detail Textuals) (USD $)	3 Months Ended												12 Months Ended			0 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	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, 2014	Dec. 31, 2013	Dec. 31, 2012	Mar. 02, 2015
Subsequent Event [Line Items]
Cash dividend declared per share	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.14	$ 0.14	$ 0.14	$ 0.14					$ 0.60	$ 0.56	$ 0.52
Dividends payable, payment date	Dec. 15, 2014	Sep. 22, 2014	Jun. 23, 2014	Mar. 24, 2014	Dec. 16, 2013	Sep. 23, 2013	Jun. 24, 2013	Mar. 25, 2013	Dec. 17, 2012	Sep. 24, 2012	Jun. 25, 2012	Mar. 26, 2012
Dividends payable record date	Dec. 08, 2014	Sep. 15, 2014	Jun. 16, 2014	Mar. 17, 2014	Dec. 09, 2013	Sep. 16, 2013	Jun. 17, 2013	Mar. 18, 2013	Dec. 10, 2012	Sep. 17, 2012	Jun. 18, 2012	Mar. 19, 2012
Subsequent Event
Subsequent Event [Line Items]
Cash dividend declared per share																$ 0.16
Dividends payable, declared date																Mar. 02, 2015
Dividends payable, payment date																Mar. 23, 2015
Dividends payable record date																Mar. 16, 2015