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UNIT-BASED COMPENSATION (Amount and Grant-date Fair Value of Vested and Nonvested Interests) (Details) (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
|
Dec. 31, 2011
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|
DFW Net Profits Interests
|
|
|
|
| Percentage Interest |
|
|
|
| Nonvested at the beginning of the period (as a percent) |
0.038% |
1.75% |
2.85% |
| Repurchased (as a percent) |
0.038% |
0.00% |
0.00% |
| Granted (as a percent) |
0.00% |
0.00% |
0.00% |
| Vested (as a percent) |
0.00% |
1.644% |
1.10% |
| Forfeited (as a percent) |
0.00% |
0.069% |
0.40% |
| Nonvested at the end of the period (as a percent) |
0.00% |
0.038% |
1.75% |
| Vested at the end of the period (as a percent) |
0.00% |
4.294% |
2.65% |
| Weighted-average grant date Fair Value (per 1.0% of SMP Net Profits Interest) |
|
|
|
| Nonvested at the beginning of the period (in dollars) |
$ 1,650 |
$ 306 |
$ 295 |
| Repurchased (in dollars) |
1,650 |
0 |
0 |
| Granted (in dollars) |
0 |
0 |
0 |
| Vested (in dollars) |
0 |
256 |
277 |
| Forfeited (in dollars) |
0 |
765 |
220 |
| Vested at the end of the period (in dollars) |
0 |
257 |
258 |
| Nonvested at the end of the period (in dollars) |
0 |
1,650 |
306 |
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SMP Net Profits Interests
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|
|
|
| Percentage Interest |
|
|
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| Nonvested at the beginning of the period (as a percent) |
3.958% |
2.944% |
|
| Granted (as a percent) |
0.50% |
2.00% |
|
| Vested (as a percent) |
1.271% |
0.986% |
|
| Nonvested at the end of the period (as a percent) |
3.187% |
3.958% |
|
| Vested at the end of the period (as a percent) |
3.168% |
1.897% |
|
| Weighted-average grant date Fair Value (per 1.0% of SMP Net Profits Interest) |
|
|
|
| Nonvested at the beginning of the period (in dollars) |
1,003 |
601 |
|
| Granted (in dollars) |
1,780 |
1,505 |
|
| Vested (in dollars) |
965 |
818 |
|
| Vested at the end of the period (in dollars) |
788 |
669 |
|
| Nonvested at the end of the period (in dollars) |
$ 1,140 |
$ 1,003 |
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