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Employee Benefit Plans And Equity-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2015
Compensation and Retirement Disclosure [Abstract] |
Summary Of Service-Based And Performance-Based Awards | A summary of our phantom unit activity for our service-based and performance-based awards is set forth below:
| Service-Based Awards |  | Performance-Based Awards
| Number of Phantom Units |  | Average Grant Date Fair Value |  | Total Value (in thousands) |  | Number of Phantom Units |  | Average Grant Date Fair Value |  | Total Value (in thousands)
Unvested at December 31, 2014 | 112,823 |  |  | $ | 44.53 |  |  | $ | 5,024 |  |  | 313,845 |  |  | $ | 42.82 |  |  | $ | 13,439 |
Granted | 58,192 |  |  | $ | 44.40 |  |  | 2,584 |  |  | 154,633 |  |  | $ | 45.15 |  |  | 6,982 |
Forfeited | (2,856 | ) |  | $ | 47.26 |  |  | (135 | ) |  | (4,201 | ) |  | $ | 46.00 |  |  | (193 | )
Settled | (35,483 | ) |  | $ | 30.79 |  |  | (1,093 | ) |  | (120,069 | ) |  | $ | 31.50 |  |  | (3,782 | )
Unvested at December 31, 2015 | 132,676 |  |  | $ | 48.09 |  |  | $ | 6,380 |  |  | 344,208 |  |  | $ | 47.78 |  |  | $ | 16,446 |
Assumptions Used To Determine Fair Value Of Rights | The estimates that we make each period to determine the fair value of these rights include the following assumptions:
| Assumptions Used for Fair Value of Rights
| December 31, 2015 |  | December 31, 2014 |  | December 31, 2013
Expected life of rights (in years) | Less than 1 |  | Less than 1 |  | Less than 1
Risk-free interest rate | —% | - | 0.07% |  | —% | - | 0.07% |  | —% | - | 0.07%
Expected unit price volatility | 39.3% |  | 39.3% |  | 39.3%
Expected future distribution yield | 5.00% |  | 5.00% |  | 5.00%
Reconciliation Of Rights Activity | The following table reflects rights activity under our Stock Appreciation Rights Plan as of January 1, 2015, and changes during the year ended December 31, 2015:
| Stock Appreciation Rights |  | Weighted Average Strike Price |  | Weighted Average Contractual Remaining Term (Yrs) |  | Aggregate Intrinsic Value
Outstanding at December 31, 2014 | 160,855 |  |  | $ | 18.08 |  |  |  |  |
Exercised during 2015 | (30,607 | ) |  | $ | 41.69 |  |  |  |  |
Forfeited or expired during 2015 | (571 | ) |  | $ | 20.92 |  |  |  |  |
Outstanding at December 31, 2015 | 129,677 |  |  | $ | 18.55 |  |  | 2.14 |  | $ | 2,350 |
Exercisable at December 31, 2015 | 129,677 |  |  | $ | 18.55 |  |  | 2.14 |  | $ | 2,350 |
Expense Related To Equity-Based Compensation Plans | Equity-based compensation expense from our continuing operations during the three years ended December 31, 2015 was as follows:
|  | Expense Related to Equity-Based Compensation Plans
Consolidated Statement of Operations |  | 2015 |  | 2014 |  | 2013
Supply and logistics operating costs |  | $ | 1,201 |  |  | $ | 485 |  |  | $ | 4,524 |
Marine transportation operating costs |  | 851 |  |  | 626 |  |  | 586 |
Refinery services operating costs |  | 227 |  |  | (62 | ) |  | 1,978 |
Offshore pipeline operating costs |  | 94 |  |  | — |  |  | — |
Onshore pipeline operating costs |  | (16 | ) |  | (52 | ) |  | 510 |
General and administrative expenses |  | 4,565 |  |  | 5,824 |  |  | 11,073 |
Total |  | $ | 6,922 |  |  | $ | 6,821 |  |  | $ | 18,671 |

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- Definition Tabular disclosure of the number and weighted-average exercise prices (or conversion ratios) for stock appreciation rights awards that were outstanding at the beginning and end of the year, and the number of stock appreciation rights awards that were granted, exercised or converted, forfeited, and expired during the year. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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