Debt - Financial Covenants and Borrowing Limitations (Details)
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9 Months Ended |
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Sep. 30, 2016
USD ($)
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Sep. 30, 2015
USD ($)
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Apr. 15, 2016
USD ($)
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Dec. 31, 2015
USD ($)
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| Debt Instrument [Line Items] |
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| Repayments of Long-term Lines of Credit |
$ 176,428,000
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$ 81,647,000
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| Proceeds from revolving credit facility |
118,533,000
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$ 0
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| Long-term debt, gross |
469,904,000
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$ 520,627,000
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| Asset Based Revolving Credit Facility |
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| Debt Instrument [Line Items] |
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| Long-term debt, gross |
43,937,000
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|
101,832,000
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| Line of credit facility, maximum borrowing capacity |
150,000,000.0
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| 2018 Notes |
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| Debt Instrument [Line Items] |
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| Long-term debt, gross |
$ 40,436,000
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$ 400,000,000
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| Debt instrument fixed charge coverage ratio minimum |
2.0
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| Face amount |
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$ 40,400,000
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| Asset Based Revolving Credit Facility Amendment Four |
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| Debt Instrument [Line Items] |
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| Line of credit facility, maximum borrowing capacity |
$ 85,000,000.0
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| Senior Loans |
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| Debt Instrument [Line Items] |
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| Line of credit facility, maximum borrowing capacity |
150,000,000.0
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| Asset Based Loan Facility |
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| Debt Instrument [Line Items] |
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| Unused borrowing capacity |
8,300,000
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| Increase (decrease) in borrowing capacity |
(12,500,000.0)
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| Asset Based Loan Facility | Credit Agreement |
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| Debt Instrument [Line Items] |
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| Increase (decrease) in borrowing capacity |
21,000,000
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| Asset Based Loan Facility | Wells Fargo Bank | Credit Agreement |
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| Debt Instrument [Line Items] |
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| Repayments of Long-term Lines of Credit |
176,400,000
|
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| Proceeds from revolving credit facility |
118,500,000
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| Line of credit facility, increase (decrease) |
$ (57,900,000)
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