|
Related-Party Transactions - Additional Information (Detail) (USD $)
|
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
|
Jun. 30, 2014
|
Jun. 30, 2013
|
Jun. 30, 2014
|
Jun. 30, 2013
|
|
| Related Party Transaction [Line Items] | ||||
| Payments for rent | $ 71,000,000 | $ 64,000,000 | $ 133,000,000 | $ 131,000,000 |
|
Former Employee [Member]
|
||||
| Related Party Transaction [Line Items] | ||||
| Number of incentive units purchased | 2,605 | |||
| Purchase price per incentive unit | $ 260.21 | |||
| Incentive units purchased | 700,000 | |||
|
Advantage [Member]
|
||||
| Related Party Transaction [Line Items] | ||||
| Administrative expenses | $ 5,000 | $ 3,000 | $ 8,000 | $ 5,000 |
|
Chief Sales Officer [Member]
|
||||
| Related Party Transaction [Line Items] | ||||
| General partnership ownership interest in related party, percentage | 0.01% | 0.01% | ||
| Limited partnership interest in related party, percentage | 10.49% | 10.49% | ||