STOCKHOLDERS' EQUITY (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future awards (in shares)	4,292,652		4,292,652
Weighted average grant date fair value [Abstract]
Unrecognized compensation cost related to non-vested shares	$ 6,185	$ 6,267	$ 6,185	$ 6,267
Weighted-average period of recognition for unrecognized compensation cost			1 year 6 months
Estimated share-based compensation expense for current fiscal year	3,800		3,800
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)			2,056,050
Number of shares acquired under stock repurchase plan (in shares)	1,882		1,882
Treasury stock acquired, average cost (in dollars per share)			$ 45.47
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on net earnings	(556)	(627)	(1,799)	(1,858)
Cost of Sales [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on earnings component	152	144	456	433
Operating Expenses [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Impact of compensation cost on earnings component	754	843	2,431	2,500
Stock Options [Member]
Weighted Average Assumptions [Abstract]
Dividend yield (in hundredths)			0.50%	0.50%
Expected volatility (in hundredths)			39.00%	41.00%
Risk-free interest rate (in hundredths)			1.00%	0.80%
Expected term			5 years	4 years 7 months 6 days
Vesting period			3 years
Stock Option Activity [Abstract]
Outstanding at beginning of period (in shares)			2,543,000	2,514,000
Granted (in shares)			175,000	226,000
Exercised (in shares)			(602,000)	(150,000)
Forfeited (in shares)			(31,000)	(5,000)
Outstanding at end of period (in shares)	2,085,000	2,585,000	2,085,000	2,585,000
Exercisable at end of period (in shares)	1,604,000	2,010,000	1,604,000	2,010,000
Weighted Average Exercise Price [Abstract]
Outstanding at beginning of period (in dollars per share)			$ 16.87	$ 14.68
Granted (in dollars per share)			$ 38.58	$ 29.14
Exercised (in dollars per share)			$ 11.21	$ 8.73
Forfeited (in dollars per share)			$ 33.90	$ 28.87
Outstanding at end of period (in dollars per share)	$ 20.08	$ 16.26	$ 20.08	$ 16.26
Exercisable, end of period (in dollars per share)	$ 15.97	$ 12.66	$ 15.97	$ 12.66
Aggregate intrinsic value, outstanding, beginning of period			49,845	65,043
Aggregate intrinsic value, outstanding, end of period	66,048	52,983	66,048	52,983
Aggregate intrinsic value, exercisable, end of period	57,399	48,402	57,399	48,402
Weighted average remaining contractual term, outstanding			5 years 3 months 18 days	5 years 3 months 18 days
Weighted average remaining contractual term, exercisable			4 years 3 months 18 days	4 years 3 months 18 days
Weighted-average fair value of options granted (in dollars per share)	$ 17.83	$ 11.50	$ 13.02	$ 9.76
Total intrinsic value of stock options exercised	$ 8,260	$ 1,659	$ 20,244	$ 4,249
Non-vested restricted stock [Roll Forward]
Non-vested balance as of beginning of year (in shares)			258,000	354,000
Granted (in shares)			21,000	54,000
Vested (in shares)			(5,000)	(80,000)
Forfeited (in shares)			(24,000)
Non-vested balance as of end of year (in shares)	250,000	328,000	250,000	328,000
Weighted average grant date fair value [Abstract]
Non-vested balance as of beginning of year (in dollars per share)			$ 26.88	$ 18.77
Granted (in dollars per share)			$ 38.10	$ 30.60
Vested (in dollars per share)			$ 35.79	$ 13.72
Forfeited (in dollars per share)			$ 31.97
Non-vested balance as of end of year (in dollars per share)	$ 27.11	$ 21.96	$ 27.11	$ 21.96
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

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The length of time subsequent to the grant date after which the options expire.

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The total number of shares that have been acquired to date under the share repurchase program.

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Number of shares that have been repurchased and reissued during the period.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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The amount of expense, net of income tax, recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units.

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Period Type:	duration

- Definition

Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of options outstanding.

+ References

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Balance Type:	debit
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- Definition

The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)-(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(a)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(1)(b)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

+ References

+ Details

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- Definition

Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Weighted average price at which option holders acquired shares when converting their stock options into shares.

+ References

No definition available.

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- Definition

Weighted average price at which grantees can acquire the shares reserved for issuance on stock options awarded.

+ References

No definition available.

+ Details

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- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.28,29)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(iv)(2)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

+ Details

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 30

-Section 45

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher AICPA

-Name Accounting Research Bulletin (ARB)

-Number 43

-Section B

-Paragraph 7

-Subparagraph b

-Chapter 1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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