Common Unit Compensation (Details) (USD $) In Thousands, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2013	Dec. 31, 2012	Mar. 02, 2012
Common Unit Compensation
Nonvoting Class B common units reserved for issuance in connection with awards under the Plan (in shares)				18,878
Term of each option from the grant date		P10Y
Options granted (in shares)	11,325	5,300	11,325
Weighted-average exercise price (in dollars per share)	$ 100.00	$ 288.78	$ 100.00
Compensation expense
Allocated share-based compensation expense in general and administrative expense		$ 27	$ 17
Number of Units
Outstanding balance at the beginning of the period (in shares)		11,325
Granted (in shares)	11,325	5,300	11,325
Forfeited/Cancelled (in shares)		(8,271)
Outstanding balance at the end of the period (in shares)		8,354	11,325
Weighted-Average Exercise Price
Outstanding balance at the beginning of the period (in dollar per share)		$ 100.00
Granted (in dollars per share)	$ 100.00	$ 288.78	$ 100.00
Forfeited/Cancelled (in dollars per share)		$ 113.69
Outstanding balance at the end of the period (in dollars per share)		$ 206.21	$ 100.00