STOCKHOLDERS' EQUITY AND SHARE-BASED COMPENSATION (Details 4) (USD $)	Dec. 31, 2013
Ordinary performance grants
Market prices for market performance options to vest
Market-based options, options expected to vest (in shares)	30,000
Market-based options, Weighted average share price (in dollars per share)	$ 107.27
Extraordinary performance grants
Market prices for market performance options to vest
Market-based options, options expected to vest (in shares)	52,125
Market-based options, Weighted average share price (in dollars per share)	$ 74.08
$160.01 - $170.00
Market prices for market performance options to vest
Market-based options, Vesting price, low end of range (in dollars per share)	$ 160.01
Market-based options, Vesting price, high end of range (in dollars per share)	$ 170.00
$160.01 - $170.00 | Ordinary performance grants
Market prices for market performance options to vest
Market-based options, options expected to vest (in shares)	7,500
Over $170.00
Market prices for market performance options to vest
Market-based options, Vesting price, low end of range (in dollars per share)	$ 170.00
Over $170.00 | Ordinary performance grants
Market prices for market performance options to vest
Market-based options, options expected to vest (in shares)	22,500
Over $170.00 | Extraordinary performance grants
Market prices for market performance options to vest
Market-based options, options expected to vest (in shares)	52,125