STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future awards (in shares)	4,115,858
Weighted average grant date fair value [Abstract]
Unrecognized compensation cost related to non-vested shares	$ 8,259	$ 8,924
Weighted-average period of recognition for unrecognized compensation cost	1 year 8 months 12 days
Estimated share-based compensation expense for current fiscal year	4,000
Stock splits and repurchase of common stock
Number of shares authorized to be repurchased (in shares)	3,763,038
Number of shares acquired under the stock repurchase plan and subsequently reissued (in shares)	2,088,388
Number of shares acquired under stock repurchase plan (in shares)	654
Treasury stock acquired, average cost (in dollars per share)	$ 49.84
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on net earnings	(653)	(670)
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on earnings component	148	152
Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on earnings component	840	924
Stock Options [Member]
Weighted Average Assumptions [Abstract]
Dividend yield (in hundredths)	0.60%	0.50%
Expected volatility (in hundredths)	33.00%	39.00%
Risk-free interest rate (in hundredths)	1.70%	0.90%
Expected term	5 years 7 months 6 days	5 years
Vesting period	3 years
Stock Option Activity [Abstract]
Outstanding at beginning of period (in shares)	1,893,000	2,543,000
Granted (in shares)	158,000	166,000
Exercised (in shares)	(125,000)	(183,000)
Forfeited (in shares)	(13,000)
Outstanding at end of period (in shares)	1,913,000	2,526,000
Exercisable at end of period (in shares)	1,504,000	2,015,000
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period (in dollars per share)	$ 20.94	$ 16.87
Granted (in dollars per share)	$ 50.57	$ 38.10
Exercised (in dollars per share)	$ 10.60	$ 11.42
Forfeited (in dollars per share)	$ 43.10
Outstanding at end of period (in dollars per share)	$ 23.92	$ 18.67
Exercisable, end of period (in dollars per share)	$ 19.28	$ 14.89
Aggregate intrinsic value, outstanding, beginning of period	71,465	49,845
Aggregate intrinsic value, outstanding, end of period	53,946	63,825
Aggregate intrinsic value, exercisable, end of period	49,392	58,552
Weighted average remaining contractual term, outstanding	5 years 7 months 6 days	5 years 4 months 24 days
Weighted average remaining contractual term, exercisable	4 years 8 months 12 days	4 years 4 months 24 days
Weighted-average fair value of options granted (in dollars per share)	$ 15.98	$ 12.85
Total intrinsic value of stock options exercised	$ 5,418	$ 5,097
Non-vested restricted stock [Roll Forward]
Non-vested balance as of beginning of year (in shares)	172,000	258,000
Granted (in shares)	20,000	21,000
Vested (in shares)	(2,000)	(2,000)
Forfeited (in shares)	(2,000)
Non-vested balance as of end of year (in shares)	188,000	277,000
Weighted average grant date fair value [Abstract]
Non-vested balance as of beginning of year (in dollars per share)	$ 33.69	$ 26.88
Granted (in dollars per share)	$ 50.49	$ 38.10
Vested (in dollars per share)	$ 35.79	$ 35.79
Forfeited (in dollars per share)	$ 32.70
Non-vested balance as of end of year (in dollars per share)	$ 35.42	$ 27.66
Minimum [Member] | Restricted Stock [Member] | Employee [Member]
Weighted Average Assumptions [Abstract]
Vesting period	90 days
Minimum [Member] | Restricted Stock [Member] | Non-employee Director [Member]
Weighted Average Assumptions [Abstract]
Vesting period	4 years
Maximum [Member] | Restricted Stock [Member] | Employee [Member]
Weighted Average Assumptions [Abstract]
Vesting period	4 years
Maximum [Member] | Restricted Stock [Member] | Non-employee Director [Member]
Weighted Average Assumptions [Abstract]
Vesting period	7 years
ISO Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options granted	10 years