|
Property, plant and equipment (Details) (USD $)
|
12 Months Ended |
|
Dec. 31, 2013
|
Dec. 31, 2012
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Dec. 31, 2011
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property, plant and equipment |
$ 321,611,000 |
$ 284,707,000 |
|
| Less: Accumulated depreciation and amortization |
(57,371,000) |
(42,943,000) |
|
| Total Property, plant and equipment, net |
264,240,000 |
241,764,000 |
|
| Impairment related to equipment |
1,200,000 |
|
|
| Depreciation and amortization expense |
18,958,000 |
11,197,000 |
9,355,000 |
|
Land and improvements [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property, plant and equipment |
10,605,000 |
4,839,000 |
|
|
Buildings, building improvements and leasehold improvements [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property, plant and equipment |
83,823,000 |
66,953,000 |
|
|
Furniture and equipment [Member]
|
|
|
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| Property, Plant and Equipment [Line Items] |
|
|
|
| Property, plant and equipment |
107,006,000 |
91,772,000 |
|
|
Software [Member]
|
|
|
|
| Property, Plant and Equipment [Line Items] |
|
|
|
| Property, plant and equipment |
21,832,000 |
15,691,000 |
|
|
Construction-in-progress [Member]
|
|
|
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| Property, Plant and Equipment [Line Items] |
|
|
|
| Property, plant and equipment |
$ 98,345,000 |
$ 105,452,000 |
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