STOCK COMPENSATION PLANS (Details 2) (USD $)	Dec. 31, 2011 Y
Options Outstanding
Number of Outstanding Options (in shares)	945,080
Weighted Average Exercise Price (in dollars per share)	$ 27.19
Weighted Average Remaining Contractual Life (in years)	2.28
Options Exercisable
Number of Exercisable Options (in shares)	758,166
Weighted Average Exercise Price (in dollars per share)	$ 29.34
Range of exercise price per share from $0.00 to $4.99
Options Outstanding
Number of Outstanding Options (in shares)	15,530
Weighted Average Exercise Price (in dollars per share)	$ 4.25
Weighted Average Remaining Contractual Life (in years)	4.25
Range of exercise price per share from $5.00 to $9.99
Options Outstanding
Number of Outstanding Options (in shares)	7,292
Weighted Average Exercise Price (in dollars per share)	$ 5.43
Weighted Average Remaining Contractual Life (in years)	4.21
Range of exercise price per share from $10.00 to $14.99
Options Outstanding
Number of Outstanding Options (in shares)	32,528
Weighted Average Exercise Price (in dollars per share)	$ 13.62
Weighted Average Remaining Contractual Life (in years)	1.42
Options Exercisable
Number of Exercisable Options (in shares)	24,115
Weighted Average Exercise Price (in dollars per share)	$ 13.17
Range of exercise price per share from $15.00 to $19.99
Options Outstanding
Number of Outstanding Options (in shares)	117,511
Weighted Average Exercise Price (in dollars per share)	$ 17.73
Weighted Average Remaining Contractual Life (in years)	2.47
Options Exercisable
Number of Exercisable Options (in shares)	90,117
Weighted Average Exercise Price (in dollars per share)	$ 17.63
Range of exercise price per share from $20.00 to $24.99
Options Outstanding
Number of Outstanding Options (in shares)	364,982
Weighted Average Exercise Price (in dollars per share)	$ 21.14
Weighted Average Remaining Contractual Life (in years)	3.21
Options Exercisable
Number of Exercisable Options (in shares)	236,697
Weighted Average Exercise Price (in dollars per share)	$ 21.09
Range of exercise price per share from $30.00 to $34.99
Options Outstanding
Number of Outstanding Options (in shares)	18,320
Weighted Average Exercise Price (in dollars per share)	$ 33.82
Weighted Average Remaining Contractual Life (in years)	0.57
Options Exercisable
Number of Exercisable Options (in shares)	18,320
Weighted Average Exercise Price (in dollars per share)	$ 33.82
Range of exercise price per share from $35.00 to $39.99
Options Outstanding
Number of Outstanding Options (in shares)	382,168
Weighted Average Exercise Price (in dollars per share)	$ 37.83
Weighted Average Remaining Contractual Life (in years)	1.38
Options Exercisable
Number of Exercisable Options (in shares)	382,168
Weighted Average Exercise Price (in dollars per share)	$ 37.83
Range of exercise price per share from $40.00 to $44.99
Options Outstanding
Number of Outstanding Options (in shares)	6,749
Weighted Average Exercise Price (in dollars per share)	$ 40.36
Weighted Average Remaining Contractual Life (in years)	1.66
Options Exercisable
Number of Exercisable Options (in shares)	6,749
Weighted Average Exercise Price (in dollars per share)	$ 40.36