SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Common Stock Repurchases and Common Stock Dividend) (Details) (USD $)	1 Months Ended			3 Months Ended							9 Months Ended		1 Months Ended
	Apr. 30, 2014	Oct. 31, 2013 quarters	Jan. 31, 2013 quarters	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	May 31, 2014 Common Stock [Member]	Oct. 31, 2012 Common Stock [Member]	Oct. 31, 2014 Common Stock [Member] Subsequent Event [Member]
Class of Stock [Line Items]
Stock repurchase program authorized amount													$ 50,000,000	$ 50,000,000	$ 25,000,000
Remaining authorized repurchase amount											34,300,000
Dividends declared (per share)	$ 0.12	$ 0.10	$ 0.08
Number of shares repurchased				400,000		0					900,000
Stock Repurchased and Retired During Period, Value				19,500,000							45,300,000
Dividends declared, number of quarters		4	4
Payments of dividends (per share)					$ 0.1	$ 0.1	$ 0.08	$ 0.08	$ 0.08	$ 0.08
Common stock dividends declared for third quarter of fiscal year 2014 (per share)				$ 0.12
Common stock dividends declared for fourth quarter of fiscal year 2014 (per share)	$ 0.12
Payments of dividends				$ 3,595,000	$ 3,000,000	$ 3,033,000	$ 2,400,000	$ 2,400,000	$ 2,300,000	$ 2,310,000	$ 9,654,000	$ 7,046,000