Long-Term Incentive Plan (Tables)
12 Months Ended
Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summarizes unit-based awards
The following table summarizes our unit-based awards for each of the periods indicated, in units:

 
 
Year Ended December 31, 2014
 
 
Shares
 
Weighted-Average Exercise Price
Outstanding at beginning of period
 
75,529

 
17.62

Granted
 
188,946

 
20.80

Forfeited
 
(12,009
)
 
18.28

Vested
 
(51,334
)
 
20.89

Outstanding at end of period
 
201,132

 
19.73