Debt - Schedule of Maturities of Long-term Debt (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Debt Instrument [Line Items]  
2015 $ 4,144
2016 4,149
2017 4,116
2018 93,339
2019 1,500
Thereafter 355,000
Long-term Debt 462,248
Revolving Credit Facility  
Debt Instrument [Line Items]  
2015 0
2016 0
2017 0
2018 89,339
2019 0
Thereafter 0
Long-term Debt 89,339
Fixtures financing  
Debt Instrument [Line Items]  
2015 144
2016 149
2017 116
2018 0
2019 0
Thereafter 0
Long-term Debt 409
2020 Senior Notes  
Debt Instrument [Line Items]  
2015 0
2016 0
2017 0
2018 0
2019 0
Thereafter 355,000
Long-term Debt 355,000
2020 subordinated notes, net of discount  
Debt Instrument [Line Items]  
2015 4,000
2016 4,000
2017 4,000
2018 4,000
2019 1,500
Thereafter 0
Long-term Debt $ 17,500