STOCK-BASED COMPENSATION (Details) (USD $)		0 Months Ended	12 Months Ended		12 Months Ended						12 Months Ended					12 Months Ended
	Dec. 31, 2013	May 13, 2010 2010 Omnibus Incentive Plan	Dec. 31, 2013 2010 Omnibus Incentive Plan	May 13, 2010 2002 Stock Incentive and Bonus Plan and 2003 Non-Employee Directors' Stock Incentive Plan	Dec. 31, 2013 Incentive stock options	Dec. 31, 2012 Incentive stock options	Dec. 31, 2011 Incentive stock options	Dec. 31, 2013 Incentive stock options Employee Awards	Dec. 31, 2012 Incentive stock options Employee Awards	Dec. 31, 2010 Incentive stock options Employee Awards	Dec. 31, 2013 Incentive stock options Director Awards	Dec. 31, 2012 Incentive stock options Director Awards	Dec. 31, 2011 Incentive stock options Director Awards	Dec. 31, 2011 Incentive stock options Non-Qualified Awards	May 13, 2010 Incentive stock options 2010 Omnibus Incentive Plan	Dec. 31, 2013 Restricted stock units	Dec. 31, 2012 Restricted stock units	Dec. 31, 2011 Restricted stock units	Dec. 31, 2013 Restricted stock units Employee Awards	Dec. 31, 2012 Restricted stock units Employee Awards	Dec. 31, 2011 Restricted stock units Employee Awards	Dec. 31, 2013 Restricted stock units Director Awards	Dec. 31, 2012 Restricted stock units Director Awards	Dec. 31, 2011 Restricted stock units Director Awards	Dec. 31, 2013 Restricted stock units 2010 Omnibus Incentive Plan
Stock Based Compensation
Shares of common stock reserved for issuance		2,500,000
Shares of common stock authorized for issuance under the share-based compensation plan		2,000,000													1,500,000
Number of shares of available for future issuance	1,100,000		1,100,000	500,000
Plan expiration unless earlier terminated by the Board of Directors		10 years
Shares of common stock issued under the Plan			1,600,000
Number of authorized shares canceled			200,000
Unrecognized stock-based compensation expense related to non-vested stock					$ 0	$ 0	$ 0									$ 14,300,000									$ 14,300,000
Period over which unrecognized stock-based compensation cost will be expensed																									4 years
The weighted average period over which unrecognized share-based compensation cost will be expensed																2 years
Stock-based compensation expense																9,000,000	8,100,000	8,100,000
Shares
Nonvested at the beginning of the period (in shares)																			811,559	893,523	808,071	121,356	115,918	133,754
Granted (in shares)																			371,111	468,500	487,620	71,651	63,497	59,698
Vested (in shares)																(370,006)	(376,986)	(436,600)	(262,860)	(318,927)	(374,067)	(107,146)	(58,059)	(62,533)
Forfeited (in shares)																			(53,174)	(231,537)	(28,101)	(997)		(15,001)
Nonvested at the end of the period (in shares)																			866,636	811,559	893,523	84,864	121,356	115,918
Weighted Average Grant Date Fair Value
Nonvested at the beginning of the period (in dollars per share)																			$ 21.76	$ 21.84	$ 16.33	$ 22.62	$ 21.12	$ 16.38
Granted (in dollars per share)																			$ 29.35	$ 20.47	$ 25.25	$ 26.05	$ 22.35	$ 25.72
Vested (in dollars per share)																			$ 21.58	$ 20.17	$ 14.61	$ 20.69	$ 19.34	$ 15.46
Forfeited (in dollars per share)																			$ 22.81	$ 21.26	$ 19.17	$ 25.72		$ 20.80
Nonvested at the end of the period (in dollars per share)																			$ 25.00	$ 21.76	$ 21.84	$ 27.92	$ 22.62	$ 21.12
Intrinsic value of shares fully vested during the period																7,900,000	7,600,000	6,400,000
Value of grants during the period																12,800,000	11,000,000	13,300,000
Shares
Outstanding at the beginning of the period (in shares)								203,000	434,500	434,500	18,855	28,259	80,091	376,000
Terminated (in shares)								(3,000)	(1,500)				(10,373)
Exercised (in shares)								(200,000)	(230,000)		(5,535)	(9,404)	(41,459)	(376,000)
Outstanding at the end of the period (in shares)									203,000	434,500	13,320	18,855	28,259
Weighted Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)								$ 11.88	$ 13.45	$ 13.45	$ 10.02	$ 11.99	$ 11.08	$ 5.95
Terminated (in dollars per share)								$ 12.10	$ 15.60				$ 10.79
Exercised (in dollars per share)								$ 11.88	$ 14.82		$ 11.21	$ 16.04	$ 10.38	$ 5.98
Outstanding at the end of the period (in dollars per share)									$ 11.88	$ 13.45	$ 9.53	$ 10.02	$ 11.99
Aggregate intrinsic value											126,956
Weighted average remaining contractual term											1 year
Intrinsic value of options exercised					2,400,000	3,600,000	2,700,000
Options exercisable (in shares)					13,320	221,855	462,759
Weighted average exercise price of options exercisable (in dollars per share)					$ 9.53	$ 11.72	$ 13.36
Average remaining contractual term of options exercisable					1 year	1 year	1 year 8 months 12 days
Aggregate intrinsic value of exercisable options					100,000	2,600,000	6,200,000
Cash received related to exercise of options					$ 2,400,000	$ 3,600,000	$ 2,700,000