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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 |  |  |

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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition 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. + 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 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: 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)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 + Details
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- Definition Number of options outstanding, including both vested and non-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 + Details
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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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. + Details
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -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=27012166&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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