Property and Equipment (Details) - USD ($)
$ in Thousands |
Dec. 31, 2016 |
Dec. 31, 2015 |
| Property, Plant and Equipment [Line Items] |
|
|
| Property and equipment, at cost |
$ 290,640
|
$ 254,788
|
| Less: Accumulated depreciation |
(86,387)
|
(70,238)
|
| Property and equipment, net |
204,253
|
184,550
|
| Carrying value of assets under capital lease |
15,400
|
12,300
|
| Accumulated depreciation of assets under capital lease |
11,600
|
10,500
|
| Land |
|
|
| Property, Plant and Equipment [Line Items] |
|
|
| Property and equipment, at cost |
8,082
|
6,790
|
| Buildings and improvements |
|
|
| Property, Plant and Equipment [Line Items] |
|
|
| Property and equipment, at cost |
118,172
|
104,971
|
| Furniture and equipment |
|
|
| Property, Plant and Equipment [Line Items] |
|
|
| Property and equipment, at cost |
14,670
|
14,520
|
| Computer and software |
|
|
| Property, Plant and Equipment [Line Items] |
|
|
| Property and equipment, at cost |
29,902
|
24,597
|
| Medical equipment |
|
|
| Property, Plant and Equipment [Line Items] |
|
|
| Property and equipment, at cost |
117,418
|
96,291
|
| Construction in progress |
|
|
| Property, Plant and Equipment [Line Items] |
|
|
| Property and equipment, at cost |
$ 2,396
|
$ 7,619
|