STOCK-BASED COMPENSATION, Equity Instruments Other Than Options (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Stock-based compensation, aggregate disclosures [Abstract]
Fair value of shares withheld for tax withholding obligations	$ 2,800,000	$ 3,500,000	$ 3,400,000
Restricted Stock and Units [Member]
Equity instruments other than options [Roll Forward]
Outstanding at January 1 (in shares)	620,971
Granted (in shares)	168,182
Vested (in shares)	(261,257)
Cancelled (in shares)	(1,300)
Outstanding at December 31 (in shares)	526,596	620,971
Equity instruments other than options, additional disclosures [Abstract]
Outstanding at January 1, Base price (in dollars per share)	$ 24.00
Granted, Base price (in dollars per share)	$ 32.76
Vested, Base price (in dollars per share)	$ 23.46
Cancelled, Base price (in dollars per share)	$ 27.70
Outstanding at December 31, Base price (in dollars per share)	$ 27.05	$ 24.00
Stock-based compensation, aggregate disclosures [Abstract]
Shares withheld for tax withholding obligations (in shares)	89,635	90,929	83,089
Weighted average grant-date fair value of restricted stock awards and units fully vested (in dollars per share)		$ 37.95	$ 35.21
Restricted Stock and Units [Member] | Minimum [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Restricted stock awards and units vesting terms	1 year
Restricted Stock and Units [Member] | Maximum [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Restricted stock awards and units vesting terms	6 years
Restricted Stock and Units [Member] | Selling, General and Adminstrative Expense [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense	3,800,000	2,900,000	3,000,000
Restricted Stock and Units [Member] | Research and Development Expense [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense	1,900,000	1,300,000	1,700,000
Performance Shares [Member]
Equity instruments other than options [Roll Forward]
Outstanding at January 1 (in shares)	0
Granted (in shares)	35,776
Vested (in shares)	0
Cancelled (in shares)	0
Outstanding at December 31 (in shares)	35,776
Equity instruments other than options, additional disclosures [Abstract]
Outstanding at January 1, Base price (in dollars per share)	$ 0.00
Granted, Base price (in dollars per share)	$ 47.78
Vested, Base price (in dollars per share)	$ 0.00
Cancelled, Base price (in dollars per share)	$ 0.00
Outstanding at December 31, Base price (in dollars per share)	$ 47.78
Stock-based compensation, aggregate disclosures [Abstract]
Total fair value of performance unit awards granted	1,400,000
Performance Shares [Member] | Selling, General and Adminstrative Expense [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense	453,000
Performance Shares [Member] | Research and Development Expense [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense	137,000
Stock Appreciation Rights (SARs) [Member]
Equity instruments other than options [Roll Forward]
Granted (in shares)			24,000
Equity instruments other than options, additional disclosures [Abstract]
Fair value of SARs at December 31, Weighted Average Grant-Date Fair Value (in dollars per share)			$ 1.93
Stock appreciation rights, fair value assumptions [Abstract]
Dividend yield rate	0.00%
Expected volatility	23.40%
Risk-free interest rates	0.02%
Expected life	7 days
Stock Appreciation Rights (SARs) [Member] | Selling, General and Adminstrative Expense [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense		1,000	13,000
Stock Appreciation Rights (SARs) [Member] | Research and Development Expense [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense		3,000	32,000
Cash payments on settlement of SARs		49,000
Common Stock [Member]
Equity instruments other than options [Roll Forward]
Granted (in shares)	123	1,755	3,196
Common Stock [Member] | Research and Development Expense [Member]
Stock-based compensation, aggregate disclosures [Abstract]
Compensation expense	$ 3,000	$ 67,000	$ 129,000
Performance-Based Vesting Requirement [Member] | Performance Shares [Member]
Equity instruments other than options [Roll Forward]
Granted (in shares)	17,888
Stock-based compensation, aggregate disclosures [Abstract]
Restricted stock awards and units vesting terms	2 years
Market-Based Vesting Requirement [Member] | Performance Shares [Member]
Equity instruments other than options [Roll Forward]
Granted (in shares)	17,888
Stock-based compensation, aggregate disclosures [Abstract]
Restricted stock awards and units vesting terms	2 years