STOCKHOLDERS' EQUITY (Details) $ / shares in Units, $ in Thousands | 12 Months Ended |
Dec. 31, 2015USD ($)Plan$ / sharesshares | Dec. 31, 2014USD ($)$ / sharesshares | Dec. 31, 2013USD ($)$ / sharesshares |
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 | $ | $ 7,009 | $ 7,220 | $ 9,397 |
Number of share-based compensation plans | Plan | 1 | | |
Weighted Average Grant Date Fair Value [Abstract] | | | |
Estimated share-based compensation expense for current fiscal year | $ | $ 4,500 | | |
Repurchase of common stock [Abstract] | | | |
Number of shares authorized to be repurchased (in shares) | 3,763,038 | | |
Number of shares acquired under stock repurchase plan (in shares) | 2,125,923 | | |
Treasury stock remaining (in shares) | 1,089 | 0 | |
Number of shares acquired under the stock repurchase plan and subsequently reissued (in shares) | 20,692 | | |
Treasury stock acquired, average cost (in dollars per share) | $ / shares | $ 58.24 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | | | |
Impact of compensation cost on net earnings | $ | $ (4,395) | $ (2,926) | $ (2,370) |
Stock options outstanding by price range [Abstract] | | | |
Shares Outstanding (in shares) | 1,017,000 | | |
Weighted Average Remaining Contractual Term of Options Outstanding | 5 years 9 months 18 days | | |
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares | $ 37.29 | | |
Number of Options Exercisable (in shares) | 667,000 | | |
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares | $ 29.19 | | |
Stock Options [Member] | | | |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | | | |
Shares available for future awards (in shares) | 3,793,007 | | |
Weighted Average Assumptions [Abstract] | | | |
Expected Volatility | 33.20% | 33.70% | 39.20% |
Expected Term | 5 years 6 months | 5 years 7 months 6 days | 5 years |
Risk-Free Interest Rate | 1.70% | 1.80% | 1.00% |
Dividend Yield | 0.60% | 0.50% | 0.50% |
Vesting period | 3 years | | |
Stock Option Activity [Abstract] | | | |
Outstanding at beginning of year (in shares) | 1,470,000 | 1,893,000 | 2,543,000 |
Granted (in shares) | 209,000 | 313,000 | 177,000 |
Exercised (in shares) | (627,000) | (610,000) | (796,000) |
Forfeited (in shares) | (35,000) | (126,000) | (31,000) |
Outstanding at end of year (in shares) | 1,017,000 | 1,470,000 | 1,893,000 |
Exercisable at end of year (in shares) | 667,000 | 1,066,000 | 1,516,000 |
Weighted Average Exercise Price [Abstract] | | | |
Outstanding at beginning of year (in dollars per share) | $ / shares | $ 27.35 | $ 20.94 | $ 16.87 |
Granted (in dollars per share) | $ / shares | 58.34 | 53.38 | 38.73 |
Exercised (in dollars per share) | $ / shares | 20.16 | 14.92 | 11.40 |
Forfeited (in dollars per share) | $ / shares | 52.97 | 56.03 | 33.90 |
Outstanding at end of year (in dollars per share) | $ / shares | 37.29 | 27.35 | 20.94 |
Exercisable at end of period (in dollars per share) | $ / shares | $ 29.19 | $ 21.52 | $ 17.64 |
Aggregate intrinsic value for outstanding stock options | $ | $ 23,927 | $ 57,742 | $ 71,465 |
Weighted average remaining contractual term for outstanding stock options | 5 years 9 months 18 days | | |
Aggregate intrinsic value for exercisable stock options outstanding | $ | $ 21,100 | | |
Weighted average remaining contractual term for exercisable stock options outstanding | 4 years 4 months 24 days | | |
Weighted-average fair value of options granted (in dollars per share) | $ / shares | $ 18.35 | $ 17.36 | $ 13.07 |
Total intrinsic value of stock options exercised | $ | $ 24,047 | $ 25,224 | $ 28,776 |
Restricted Stock [Member] | | | |
Non-vested Restricted Stock [Roll Forward] | | | |
Non-vested balance as of beginning of year (in shares) | 134,000 | 172,000 | 258,000 |
Granted (in shares) | 77,000 | 33,000 | 32,000 |
Vested (in shares) | (61,000) | (65,000) | (94,000) |
Forfeited (in shares) | 0 | (6,000) | (24,000) |
Non-vested balance as of end of year (in shares) | 150,000 | 134,000 | 172,000 |
Weighted Average Grant Date Fair Value [Abstract] | | | |
Non-vested balance as of beginning of year (in dollars per share) | $ / shares | $ 38.13 | $ 33.69 | $ 26.88 |
Granted (in dollars per share) | $ / shares | 55.77 | 54.86 | 44.69 |
Vested (in dollars per share) | $ / shares | 37.35 | 34.19 | 19.31 |
Forfeited (in dollars per share) | $ / shares | 0 | 45.32 | 31.97 |
Non-vested balance as of end of year (in dollars per share) | $ / shares | $ 47.46 | $ 38.13 | $ 33.69 |
Unrecognized compensation cost related to non-vested shares | $ | $ 7,705 | $ 5,981 | $ 5,947 |
Weighted-average period of recognition for unrecognized compensation cost | 1 year 6 months | | |
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) | 0 | 0 | 0 |
Granted (in shares) | 29,000 | 0 | 0 |
Vested (in shares) | 0 | 0 | 0 |
Forfeited (in shares) | (9,000) | 0 | 0 |
Non-vested balance as of end of year (in shares) | 20,000 | 0 | 0 |
Weighted Average Grant Date Fair Value [Abstract] | | | |
Non-vested balance as of beginning of year (in dollars per share) | $ / shares | $ 0 | $ 0 | $ 0 |
Granted (in dollars per share) | $ / shares | 58.77 | 0 | 0 |
Vested (in dollars per share) | $ / shares | 0 | 0 | 0 |
Forfeited (in dollars per share) | $ / shares | 58.77 | 0 | 0 |
Non-vested balance as of end of year (in dollars per share) | $ / shares | $ 58.77 | $ 0 | $ 0 |
Performance Shares [Member] | Employee [Member] | | | |
Weighted Average Assumptions [Abstract] | | | |
Expected Volatility | 34.00% | | |
Risk-Free Interest Rate | 1.00% | | |
Dividend Yield | 0.50% | | |
Vesting period | 3 years | | |
Weighted Average Grant Date Fair Value [Abstract] | | | |
Initial TSR | (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] | | | |
Impact of compensation cost on earnings component | $ | $ 854 | $ 593 | $ 607 |
Operating Expenses [Member] | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] | | | |
Impact of compensation cost on earnings component | $ | $ 5,975 | $ 3,964 | $ 3,210 |
$9.21 - $22.34 [Member] | | | |
Stock options outstanding by price range [Abstract] | | | |
Range of Exercise Prices, Minimum (in dollars per share) | $ / shares | $ 11.87 | | |
Range of Exercise Prices, Maximum (in dollars per share) | $ / shares | $ 22.34 | | |
Shares Outstanding (in shares) | 254,000 | | |
Weighted Average Remaining Contractual Term of Options Outstanding | 2 years 10 months 24 days | | |
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares | $ 17.47 | | |
Number of Options Exercisable (in shares) | 254,000 | | |
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares | $ 17.47 | | |
$24.95 - $32.21 [Member] | | | |
Stock options outstanding by price range [Abstract] | | | |
Range of Exercise Prices, Minimum (in dollars per share) | $ / shares | 29.06 | | |
Range of Exercise Prices, Maximum (in dollars per share) | $ / shares | $ 41.67 | | |
Shares Outstanding (in shares) | 389,000 | | |
Weighted Average Remaining Contractual Term of Options Outstanding | 5 years 7 months 6 days | | |
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares | $ 33.43 | | |
Number of Options Exercisable (in shares) | 339,000 | | |
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares | $ 32.74 | | |
$33.81 - $58.42 [Member] | | | |
Stock options outstanding by price range [Abstract] | | | |
Range of Exercise Prices, Minimum (in dollars per share) | $ / shares | 46.12 | | |
Range of Exercise Prices, Maximum (in dollars per share) | $ / shares | $ 60.01 | | |
Shares Outstanding (in shares) | 374,000 | | |
Weighted Average Remaining Contractual Term of Options Outstanding | 7 years 10 months 24 days | | |
Weighted Average Exercise Price of Options Outstanding (in dollars per share) | $ / shares | $ 54.78 | | |
Number of Options Exercisable (in shares) | 74,000 | | |
Weighted Average Exercise Price of Options Exercisable (in dollars per share) | $ / shares | $ 53.23 | | |