STOCK COMPENSATION PLANS, Option Plan By Exercise Price Range (Details) (Stock Options [Member], USD $)	12 Months Ended
	Dec. 31, 2012
Employee Stock Option And Appreciation Right Plan [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Options outstanding (in shares)	217,561
Options outstanding, weighted average exercise price (in dollars per share)	$ 21.50
Options outstanding, weighted average remaining term	1 year 3 months 18 days
Employee Stock Option And Appreciation Right Plan [Member] | $17.00 - $20.00 [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Range of exercise prices, lower range limit (in dollars per share)	$ 17.00
Range of exercise prices, upper range limit (in dollars per share)	$ 20.00
Options outstanding (in shares)	33,055
Options outstanding, weighted average exercise price (in dollars per share)	$ 18.27
Options outstanding, weighted average remaining term	3 months 18 days
Employee Stock Option And Appreciation Right Plan [Member] | $21.00 - $23.00 [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Range of exercise prices, lower range limit (in dollars per share)	$ 21.00
Range of exercise prices, upper range limit (in dollars per share)	$ 23.00
Options outstanding (in shares)	184,506
Options outstanding, weighted average exercise price (in dollars per share)	$ 22.08
Options outstanding, weighted average remaining term	1 year 4 months 24 days
Director's Plan [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Options outstanding (in shares)	58,306
Options outstanding, weighted average exercise price (in dollars per share)	$ 21.15
Options outstanding, weighted average remaining term	1 year 2 months 12 days
Director's Plan [Member] | $17.00 - $20.00 [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Range of exercise prices, lower range limit (in dollars per share)	$ 17.00
Range of exercise prices, upper range limit (in dollars per share)	$ 20.00
Options outstanding (in shares)	13,360
Options outstanding, weighted average exercise price (in dollars per share)	$ 18.27
Options outstanding, weighted average remaining term	2 months 12 days
Director's Plan [Member] | $21.00 - $23.00 [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Range of exercise prices, lower range limit (in dollars per share)	$ 21.00
Range of exercise prices, upper range limit (in dollars per share)	$ 23.00
Options outstanding (in shares)	44,946
Options outstanding, weighted average exercise price (in dollars per share)	$ 22.01
Options outstanding, weighted average remaining term	1 year 6 months
2007 Long-Term Incentive Plan [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Options outstanding (in shares)	86,226
Options outstanding, weighted average exercise price (in dollars per share)	$ 9.22
Options outstanding, weighted average remaining term	5 years 4 months 24 days
Options exercisable at end of year (in shares)	75,706
Options exercisable, weighted average exercise price at end of year (in dollars per share)	$ 9.88
2007 Long-Term Incentive Plan [Member] | $4.50 [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Range of exercise prices, upper range limit (in dollars per share)	$ 4.50
Options outstanding (in shares)	60,100
Options outstanding, weighted average exercise price (in dollars per share)	$ 4.50
Options outstanding, weighted average remaining term	5 years 9 months 18 days
Options exercisable at end of year (in shares)	49,580
Options exercisable, weighted average exercise price at end of year (in dollars per share)	$ 4.50
2007 Long-Term Incentive Plan [Member] | $20.08 [Member]
Stock Option Plan, Exercise Price Range [Line Items]
Range of exercise prices, upper range limit (in dollars per share)	$ 20.08
Options outstanding (in shares)	26,126
Options outstanding, weighted average exercise price (in dollars per share)	$ 20.08
Options outstanding, weighted average remaining term	4 years 7 months 6 days
Options exercisable at end of year (in shares)	26,126
Options exercisable, weighted average exercise price at end of year (in dollars per share)	$ 20.08