STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future awards (in shares)	4,117,896		4,117,896
Weighted average grant date fair value [Abstract]
Unrecognized compensation cost related to non-vested shares	$ 7,158	$ 7,047	$ 7,158	$ 7,047
Weighted-average period of recognition for unrecognized compensation cost			1 year 7 months 6 days
Estimated share-based compensation expense for current fiscal year	4,500		4,500
Stock splits and repurchase of common stock
Number of shares authorized to be repurchased (in shares)	3,763,038		3,763,038
Number of shares acquired under the stock repurchase plan and subsequently reissued (in shares)			2,092,703
Number of shares acquired under stock repurchase plan (in shares)			4,969
Treasury stock acquired, average cost (in dollars per share)			$ 53.81
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on net earnings	(847)	(573)	(1,499)	(1,243)
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on earnings component	163	152	311	304
Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on earnings component	1,196	753	2,036	1,677
Stock Options [Member]
Weighted Average Assumptions [Abstract]
Dividend yield (in hundredths)			0.50%	0.50%
Expected volatility (in hundredths)			34.00%	39.00%
Risk-free interest rate (in hundredths)			1.80%	1.00%
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)			268,000	172,000
Exercised (in shares)			(249,000)	(402,000)
Forfeited (in shares)			(126,000)	(31,000)
Outstanding at end of period (in shares)	1,786,000	2,282,000	1,786,000	2,282,000
Exercisable at end of period (in shares)	1,425,000	1,802,000	1,425,000	1,802,000
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period (in dollars per share)			$ 20.94	$ 16.87
Granted (in dollars per share)			$ 53.80	$ 38.35
Exercised (in dollars per share)			$ 11.56	$ 12.65
Forfeited (in dollars per share)			$ 56.03	$ 33.88
Outstanding at end of period (in dollars per share)	$ 24.71	$ 19.01	$ 24.71	$ 19.01
Exercisable, end of period (in dollars per share)	$ 20.40	$ 15.11	$ 20.40	$ 15.11
Aggregate intrinsic value, outstanding, beginning of period			71,465	49,845
Aggregate intrinsic value, outstanding, end of period	51,517	58,749	51,517	58,749
Aggregate intrinsic value, exercisable, end of period	47,250	53,425	47,250	53,425
Weighted average remaining contractual term, outstanding			5 years 3 months 18 days	5 years 2 months 12 days
Weighted average remaining contractual term, exercisable			4 years 4 months 24 days	4 years 2 months 12 days
Weighted-average fair value of options granted (in dollars per share)	$ 19.68	$ 15.58	$ 17.53	$ 12.94
Total intrinsic value of stock options exercised	$ 5,526	$ 6,887	$ 10,944	$ 11,984
Restricted Stock [Member]
Non-vested restricted stock [Roll Forward]
Non-vested balance as of beginning of period (in shares)			172,000	258,000
Granted (in shares)			25,000	21,000
Vested (in shares)			(24,000)	(3,000)
Forfeited (in shares)			(6,000)	(24,000)
Non-vested balance as of end of period (in shares)	167,000	252,000	167,000	252,000
Weighted average grant date fair value [Abstract]
Non-vested balance as of beginning of period (in dollars per share)			$ 33.69	$ 26.88
Granted (in dollars per share)			$ 51.03	$ 38.10
Vested (in dollars per share)			$ 37.61	$ 35.79
Forfeited (in dollars per share)			$ 45.32	$ 31.97
Non-vested balance as of end of period (in dollars per share)	$ 35.27	$ 27.18	$ 35.27	$ 27.18
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