STOCK PLANS (Details 4) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Number of Options
Exercised (in shares)	(330,895,000)	(93,839,000)	(878,658,000)
Stock options
Number of Options
Outstanding at beginning of year (in shares)	1,364,284	1,540,193	2,505,101
Granted (in shares)		20,000
Exercised (in shares)	(330,895)	(93,839)	(878,658)
Expired (in shares)		(37,070)
Forfeited (in shares)	(10,000)	(65,000)	(86,250)
Outstanding at end of year (in shares)	1,023,389	1,364,284	1,540,193
Exercisable at end of year (in shares)	1,007,389
Weighted-Average Exercise Price
Outstanding at beginning of year (in dollars per share)	$ 13.84	$ 13.83	$ 14.22
Granted (in dollars per share)		$ 15.98
Exercised (in dollars per share)	$ 11.98	$ 11.09	$ 14.97
Expired (in dollars per share)		$ 16.34
Forfeited (in dollars per share)	$ 10.24	$ 16.76	$ 13.54
Outstanding at end of year (in dollars per share)	$ 14.48	$ 13.84	$ 13.83
Exercisable at end of year (in dollars per share)	$ 14.45
Weighted- Average Remaining Contractual Life (years)
Outstanding at end of year	2 years 8 months 16 days	3 years 6 months 11 days	4 years 4 months 6 days
Exercisable at end of year	2 years 7 months 13 days
Aggregate Intrinsic Value
Outstanding at beginning of year	$ 3,686,098	$ 3,631,381	$ 7,742,565
Granted		0
Exercised	1,739,700	426,278	4,731,919
Expired		37,070
Forfeited	42,400	76,425	565,800
Outstanding at end of year	4,625,520	3,686,098	3,631,381
Exercisable at end of year	$ 4,588,240