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STOCK-BASED COMPENSATION Performance-based Awards and Restricted Stock Units (Details) $ / shares in Units, $ in Thousands | 3 Months Ended
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Mar. 31, 2020 USD ($) $ / shares shares
Restricted Stock Units (RSUs) |
Shares |
Outstanding at January 1, 2020 | 860,000
Granted | 70,000
Vested | (117,000)
Forfeited | (3,000)
Outstanding at March 31, 2020 | 810,000
Outstanding and expected to vest at March 31, 2020 | 752,000
Weighted- Average Grant Date Fair Value Per Share (in dollars per share) |
Outstanding at January 1, 2020 | $ / shares | $ 62.66
Granted | $ / shares | 97.97
Vested | $ / shares | 58.12
Forfeited | $ / shares | 64.40
Outstanding at March 31, 2020 | $ / shares | $ 66.39
Weighted-Average Remaining Contractual Term (In years) |
Outstanding at March 31, 2020 | 2 years 7 days
Outstanding and expected to vest at March 31, 2020 | 1 year 6 months 18 days
Aggregate Intrinsic Value (In thousands) |
Outstanding at March 31, 2020 | $ | $ 71,528
Outstanding and expected to vest at March 31, 2020 | $ | $ 66,443
Long-Term Performance-Based Awards (PRSUs) |
Shares |
Outstanding at January 1, 2020 | 144,000
Granted | 73,000
Vested | 0
Forfeited | 0
Outstanding at March 31, 2020 | 217,000
Outstanding and expected to vest at March 31, 2020 | 131,000
Weighted- Average Grant Date Fair Value Per Share (in dollars per share) |
Outstanding at January 1, 2020 | $ / shares | $ 64.05
Granted | $ / shares | 98.75
Vested | $ / shares | 0
Forfeited | $ / shares | 0
Outstanding at March 31, 2020 | $ / shares | $ 75.70
Weighted-Average Remaining Contractual Term (In years) |
Outstanding at March 31, 2020 | 1 year 9 months
Outstanding and expected to vest at March 31, 2020 | 2 years 3 months 18 days
Aggregate Intrinsic Value (In thousands) |
Outstanding at March 31, 2020 | $ | $ 19,097
Outstanding and expected to vest at March 31, 2020 | $ | $ 11,564
Performance Based Awards (PSUs) |
Shares |
Outstanding at January 1, 2020 | 61,000
Granted | 42,000
Vested | (61,000)
Forfeited | 0
Outstanding at March 31, 2020 | 42,000
Outstanding and expected to vest at March 31, 2020 | 42,000
Weighted- Average Grant Date Fair Value Per Share (in dollars per share) |
Outstanding at January 1, 2020 | $ / shares | $ 70.11
Granted | $ / shares | 100.23
Vested | $ / shares | 70.11
Forfeited | $ / shares | 0
Outstanding at March 31, 2020 | $ / shares | $ 100.23
Weighted-Average Remaining Contractual Term (In years) |
Outstanding at March 31, 2020 | 9 months
Outstanding and expected to vest at March 31, 2020 | 9 months
Aggregate Intrinsic Value (In thousands) |
Outstanding at March 31, 2020 | $ | $ 3,728
Outstanding and expected to vest at March 31, 2020 | $ | $ 3,728
Minimum [Member] | Long-Term Performance-Based Awards (PRSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Performance Based Awards Shares Released As Percentage Of Target Number | 0.00%
Minimum [Member] | Performance Based Awards (PSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Performance Based Awards Shares Released As Percentage Of Target Number | 0.00%
Maximum [Member] | Long-Term Performance-Based Awards (PRSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Performance Based Awards Shares Released As Percentage Of Target Number | 200.00%
Maximum [Member] | Performance Based Awards (PSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Performance Based Awards Shares Released As Percentage Of Target Number | 200.00%

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