SHAREHOLDERS EQUITY - (Detail Textuals) (USD $)	3 Months Ended										6 Months Ended		12 Months Ended		0 Months Ended
	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	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Aug. 05, 2013 Subsequent Event
Stockholders Equity Note [Line Items]
Cash dividend declared (in dollars per share)	$ 0.14	$ 0.14	$ 0.13	$ 0.13	$ 0.13	$ 0.13	$ 0.12	$ 0.12	$ 0.12	$ 0.12	$ 0.28	$ 0.26	$ 0.52	$ 0.48	$ 0.14
Dividend payable date	Jun. 24, 2013	Mar. 25, 2013	Dec. 17, 2012	Sep. 24, 2012	Jun. 25, 2012	Mar. 26, 2012	Dec. 19, 2011	Aug. 26, 2011	May 31, 2011	Mar. 24, 2011					Sep. 23, 2013
Record date	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					Sep. 16, 2013