STOCKHOLDERS' EQUITY (Details) (USD $) | 3 Months Ended | 9 Months Ended |
In Thousands, except Share data, unless otherwise specified | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ' | ' | ' | ' |
Shares available for future awards (in shares) | 4,072,896 | ' | 4,072,896 | ' |
Weighted average grant date fair value [Abstract] | ' | ' | ' | ' |
Unrecognized compensation cost related to non-vested shares | $6,537 | $6,185 | $6,537 | $6,185 |
Weighted-average period of recognition for unrecognized compensation cost | ' | ' | '1 year 7 months 6 days | ' |
Estimated share-based compensation expense for current fiscal year | 4,600 | ' | 4,600 | ' |
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 | -690 | -556 | -2,189 | -1,799 |
Cost of Sales [Member] | ' | ' | ' | ' |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ' | ' | ' | ' |
Impact of compensation cost on earnings component | 141 | 152 | 452 | 456 |
Operating Expenses [Member] | ' | ' | ' | ' |
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items] | ' | ' | ' | ' |
Impact of compensation cost on earnings component | 961 | 754 | 2,997 | 2,431 |
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) | ' | ' | 313,000 | 175,000 |
Exercised (in shares) | ' | ' | -456,000 | -602,000 |
Forfeited (in shares) | ' | ' | -126,000 | -31,000 |
Outstanding at end of period (in shares) | 1,624,000 | 2,085,000 | 1,624,000 | 2,085,000 |
Exercisable at end of period (in shares) | 1,220,000 | 1,604,000 | 1,220,000 | 1,604,000 |
Weighted Average Exercise Price [Abstract] | ' | ' | ' | ' |
Outstanding at beginning of period (in dollars per share) | ' | ' | $20.94 | $16.87 |
Granted (in dollars per share) | ' | ' | $53.38 | $38.58 |
Exercised (in dollars per share) | ' | ' | $14.49 | $11.21 |
Forfeited (in dollars per share) | ' | ' | $56.03 | $33.90 |
Outstanding at end of period (in dollars per share) | $26.29 | $20.08 | $26.29 | $20.08 |
Exercisable, end of period (in dollars per share) | $20.83 | $15.97 | $20.83 | $15.97 |
Aggregate Intrinsic Value, Outstanding, beginning of period | ' | ' | 71,465 | 49,845 |
Aggregate Intrinsic Value, Outstanding, end of period | 49,192 | 66,048 | 49,192 | 66,048 |
Aggregate Intrinsic Value, Exercisable, end of period | 43,583 | 57,399 | 43,583 | 57,399 |
Weighted Average Remaining Contractual Term, Outstanding | ' | ' | '5 years 7 months 6 days | '5 years 3 months 18 days |
Weighted Average Remaining Contractual Term, Exercisable | ' | ' | '4 years 7 months 6 days | '4 years 3 months 18 days |
Weighted-average fair value of options granted (in dollars per share) | $16.38 | $17.83 | $17.36 | $13.02 |
Total intrinsic value of stock options exercised | $7,241 | $8,260 | $18,185 | $20,244 |
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 | -5,000 |
Forfeited (in shares) | ' | ' | -6,000 | -24,000 |
Non-vested balance as of end of period (in shares) | 167,000 | 250,000 | 167,000 | 250,000 |
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 | $27.11 | $35.27 | $27.11 |
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 | ' | ' | ' |