STOCKHOLDERS' EQUITY (Details) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2016 USD ($) Plan $ / shares shares	Dec. 31, 2015 USD ($) $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Impact of stock-based compensation cost on net earnings | $	$ (4,473)	$ (4,395)	$ (2,926)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Increase in cash flows from financing activities , excess tax benefits related to stock compensation | $	$ 2,546	$ 7,009	$ 7,220
Number of share-based compensation plans | Plan	1
Weighted Average Grant Date Fair Value [Abstract]
Estimated share-based compensation expense for current fiscal year | $	$ 6,900
Repurchase of common stock [Abstract]
Number of shares authorized to be repurchased (in shares)	3,763,038
Aggregate number of shares repurchased since inception (in shares)	2,150,835
Number of shares remaining in treasury (in shares)	0	1,089
Number of shares acquired under the stock repurchase plan and subsequently reissued (in shares)	24,912
Treasury stock acquired, average cost (in dollars per share) | $ / shares	$ 63.76
Stock options outstanding by price range [Abstract]
Shares Outstanding (in shares)	1,066,000
Weighted Average Remaining Contractual Term of Options Outstanding	6 years 2 months 12 days
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares	$ 45.32
Number of Options Exercisable (in shares)	604,000
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares	$ 34.77
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future awards (in shares)	3,476,571
Weighted Average Assumptions [Abstract]
Expected Volatility	34.40%	33.20%	33.70%
Expected Term	5 years	5 years 6 months	5 years 7 months 6 days
Risk-Free Interest Rate	1.20%	1.70%	1.80%
Dividend Yield	0.50%	0.60%	0.50%
Vesting period	3 years
Stock Option Activity [Abstract]
Outstanding at beginning of year (in shares)	1,017,000	1,470,000	1,893,000
Granted (in shares)	341,000	209,000	313,000
Exercised (in shares)	(236,000)	(627,000)	(610,000)
Forfeited (in shares)	(56,000)	(35,000)	(126,000)
Outstanding at end of year (in shares)	1,066,000	1,017,000	1,470,000
Exercisable at end of year (in shares)	604,000	667,000	1,066,000
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of year (in dollars per share) | $ / shares	$ 37.29	$ 27.35	$ 20.94
Granted (in dollars per share) | $ / shares	60.92	58.34	53.38
Exercised (in dollars per share) | $ / shares	30.44	20.16	14.92
Forfeited (in dollars per share) | $ / shares	58.23	52.97	56.03
Outstanding at end of year (in dollars per share) | $ / shares	45.32	37.29	27.35
Exercisable at end of period (in dollars per share) | $ / shares	$ 34.77	$ 29.19	$ 21.52
Aggregate intrinsic value for outstanding stock options | $	$ 41,161	$ 23,927	$ 57,742
Weighted average remaining contractual term for outstanding stock options	6 years 2 months 12 days
Aggregate intrinsic value for exercisable stock options outstanding | $	$ 29,680
Weighted average remaining contractual term for exercisable stock options outstanding	4 years 7 months 6 days
Weighted-average fair value of options granted (in dollars per share) | $ / shares	$ 18.48	$ 18.35	$ 17.36
Total intrinsic value of stock options exercised | $	$ 8,609	$ 24,047	$ 25,224
Restricted Stock [Member]
Non-vested Restricted Stock [Roll Forward]
Non-vested balance as of beginning of year (in shares)	150,000	134,000	172,000
Granted (in shares)	19,000	77,000	33,000
Vested (in shares)	(66,000)	(61,000)	(65,000)
Forfeited (in shares)	(1,000)	0	(6,000)
Non-vested balance as of end of year (in shares)	102,000	150,000	134,000
Weighted Average Grant Date Fair Value [Abstract]
Non-vested balance as of beginning of year (in dollars per share) | $ / shares	$ 47.46	$ 38.13	$ 33.69
Granted (in dollars per share) | $ / shares	61.22	55.77	54.86
Vested (in dollars per share) | $ / shares	40.96	37.35	34.19
Forfeited (in dollars per share) | $ / shares	56.77	0	45.32
Non-vested balance as of end of year (in dollars per share) | $ / shares	$ 54.18	$ 47.46	$ 38.13
Unrecognized compensation cost related to non-vested shares | $	$ 8,260	$ 7,705	$ 5,981
Weighted-average period of recognition for unrecognized compensation cost	1 year 4 months 24 days
Restricted Stock [Member] | Employee [Member]
Weighted Average Assumptions [Abstract]
Vesting period	4 years
Restricted Stock [Member] | Non-employee Director [Member]
Weighted Average Assumptions [Abstract]
Vesting period	4 years
Performance Shares [Member]
Non-vested Restricted Stock [Roll Forward]
Non-vested balance as of beginning of year (in shares)	20,000	0	0
Granted (in shares)	22,000	29,000	0
Vested (in shares)	0	0	0
Forfeited (in shares)	(8,000)	(9,000)	0
Non-vested balance as of end of year (in shares)	34,000	20,000	0
Weighted Average Grant Date Fair Value [Abstract]
Non-vested balance as of beginning of year (in dollars per share) | $ / shares	$ 58.77	$ 0	$ 0
Granted (in dollars per share) | $ / shares	63.15	58.77	0
Vested (in dollars per share) | $ / shares	0	0	0
Forfeited (in dollars per share) | $ / shares	60.88	58.77	0
Non-vested balance as of end of year (in dollars per share) | $ / shares	$ 61.06	$ 58.77	$ 0
Performance Shares [Member] | Employee [Member]
Weighted Average Assumptions [Abstract]
Expected Volatility	32.00%	34.00%
Risk-Free Interest Rate	0.88%	1.00%
Dividend Yield	0.60%	0.50%
Vesting period	3 years
Weighted Average Grant Date Fair Value [Abstract]
Initial TSR	(6.60%)	(6.90%)
Cliff vest	100.00%
1999 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial number of common stock shares reserved for issuance (in shares)	600,000
Increase in the number of shares of common stock reserved for issuance (in shares)	600,000
1999 Stock Plan [Member] | Non-employee Director [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased under restricted stock purchase agreements, minimum (in shares)	500
Shares purchased under restricted stock purchase agreements, maximum (in shares)	54,000
1999 Stock Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of option grants exercisable after one year	20.00%
Percentage of option grants exercisable after two years	60.00%
Percentage of option grants exercisable after three years	100.00%
Expiration period of options granted	10 years
1999 Stock Plan [Member] | Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares purchased under restricted stock purchase agreements, minimum (in shares)	1,000
Shares purchased under restricted stock purchase agreements, maximum (in shares)	20,250
Shares purchased under restricted stock purchase agreements, purchase price, minimum (in dollars per share) | $ / shares	$ 0.02
Shares purchased under restricted stock purchase agreements, purchase price, maximum (in dollars per share) | $ / shares	$ 0.07
Amended 1999 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial number of common stock shares reserved for issuance (in shares)	1,200,000
Second Amended 1999 Stock Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Initial number of common stock shares reserved for issuance (in shares)	6,000,000
ISO Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options granted	10 years
Non-Qualified Plan [Member] | Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration period of options granted	10 years
Cost of Sales [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation cost | $	$ 1,040	$ 854	$ 593
Operating Expenses [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items]
Stock-based compensation cost | $	$ 5,984	$ 5,975	$ 3,964
$13.61 - $34.81 [Member]
Stock options outstanding by price range [Abstract]
Range of Exercise Prices, Minimum (in dollars per share) | $ / shares	$ 13.61
Range of Exercise Prices, Maximum (in dollars per share) | $ / shares	$ 34.81
Shares Outstanding (in shares)	356,000
Weighted Average Remaining Contractual Term of Options Outstanding	3 years 6 months
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares	$ 25.40
Number of Options Exercisable (in shares)	356,000
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares	$ 25.40
$38.10 - $59.95 [Member]
Stock options outstanding by price range [Abstract]
Range of Exercise Prices, Minimum (in dollars per share) | $ / shares	38.10
Range of Exercise Prices, Maximum (in dollars per share) | $ / shares	$ 59.95
Shares Outstanding (in shares)	406,000
Weighted Average Remaining Contractual Term of Options Outstanding	6 years 7 months 6 days
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares	$ 51.03
Number of Options Exercisable (in shares)	224,000
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares	$ 46.89
$60.01 - $80.26 [Member]
Stock options outstanding by price range [Abstract]
Range of Exercise Prices, Minimum (in dollars per share) | $ / shares	60.01
Range of Exercise Prices, Maximum (in dollars per share) | $ / shares	$ 80.26
Shares Outstanding (in shares)	304,000
Weighted Average Remaining Contractual Term of Options Outstanding	9 years
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares	$ 61.00
Number of Options Exercisable (in shares)	24,000
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares	$ 60.84