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Property and Equipment - Amount of Depreciation Expense, Amortization Expense and Accumulated Amortization Relating to Assets under Capital Lease Obligations and Rent Expense under Operating Leases (Detail) (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
Dec. 31, 2012
|
| Capital Leased Assets [Line Items] |
|
|
|
| Depreciation expense |
$ 34,796 |
$ 28,808 |
$ 29,706 |
| Assets under capital lease obligations: |
|
|
|
| Assets under capital lease obligations |
51,177 |
45,546 |
29,772 |
| Accumulated depreciation |
(22,930) |
(16,588) |
(15,498) |
| Assets under capital lease obligations, net |
28,247 |
28,958 |
14,274 |
| Amortization expense |
7,753 |
5,991 |
5,432 |
| Rent Expense: |
|
|
|
| Minimum rent payments |
24,419 |
21,986 |
21,489 |
| Contingent and other rents |
10,727 |
9,596 |
10,430 |
| Total rent expense |
35,146 |
31,582 |
31,919 |
| Buildings [Member] |
|
|
|
| Assets under capital lease obligations: |
|
|
|
| Assets under capital lease obligations |
19,279 |
17,062 |
13,004 |
| Equipment [Member] |
|
|
|
| Assets under capital lease obligations: |
|
|
|
| Assets under capital lease obligations |
$ 31,898 |
$ 28,484 |
$ 16,768 |