XML 63 R47.htm IDEA: XBRL DOCUMENT
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Debt (Details) |  |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Nov. 01, 2016 USD ($) | Aug. 29, 2016 USD ($) | Nov. 26, 2013 USD ($) | May 08, 2013 USD ($) | Dec. 31, 2016 USD ($) Integer8 | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Mar. 30, 2016 USD ($) | May 15, 2015 USD ($) | Aug. 15, 2013 USD ($) | Oct. 22, 2012 USD ($)
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  | $ 437,629,000 | $ 344,589,000 |  |  |  |  |
Deferred financing costs |  |  |  |  | (7,371,000) | (6,616,000) |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on extinguishment of debt |  |  |  |  | (14,304,000) | 0 | $ 0 |  |  |  |
Interest paid |  |  |  |  | 21,000,000 | 20,600,000 | $ 20,200,000 |  |  |  |
Maturities of Long-term Debt [Abstract] |  |  |  |  |  |  |  |  |  |  |
2017 |  |  |  |  | 0 |  |  |  |  |  |
2018 |  |  |  |  | 0 |  |  |  |  |  |
2019 |  |  |  |  | 0 |  |  |  |  |  |
2020 |  |  |  |  | 0 |  |  |  |  |  |
2021 |  |  |  |  | 0 |  |  |  |  |  |
Thereafter |  |  |  |  | 445,000,000 |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2022 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  | $ 50,000,000 | 50,000,000 |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Term Loan, Face Amount |  |  |  |  |  |  |  |  | $ 50,000,000 |  |
Term Loan, Average Interest Rate During Period |  |  |  |  | 2.23% |  |  |  |  |  |
Term Loan, Average interest rate during period with patronage credits |  |  |  |  | 1.50% |  |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  | $ 50,000,000 |  |
Medium-term Notes [Member] | Term Loan Due 2022 [Member] | Base Rate [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 0.75% |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2022 [Member] | Base Rate [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 1.25% |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2022 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 1.75% |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2022 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 2.25% |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2026 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  | $ 45,000,000 | 0 |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Term Loan, Face Amount |  |  |  |  |  |  |  | $ 75,000,000 |  |  |
Long-term Debt, Maturities, Repayments of Principal after Year Five |  |  |  |  | $ 10,000,000 |  |  |  |  |  |
Number of reborrowing instances allowed | Integer8 |  |  |  |  | 3 |  |  |  |  |  |
Minimum reborrowing amounts |  |  |  |  | $ 10,000,000 |  |  |  |  |  |
Debt Instrument, Unused Borrowing Capacity, Fee (as a percentage) |  |  |  |  | 0.325% |  |  |  |  |  |
Debt Instrument, Unused Borrowing Capacity, Amount |  |  |  |  | $ 30,000,000 |  |  |  |  |  |
Debt Instrument, Covenant, Capitalization Ratio, Maximum (as a percent) |  |  |  |  | 60.00% |  |  |  |  |  |
Debt Instrument, Covenant, Consolidated Net Worth, Minimum |  |  |  |  | $ 350,000,000 |  |  |  |  |  |
Debt Instrument, Covenant, Available Liquidity, Minimum |  |  |  |  | 100,000,000 |  |  |  |  |  |
Threshold of amount of capital expenditures made during four consecutive quarters, maximum |  |  |  |  | $ 50,000,000 |  |  |  |  |  |
Term Loan, Average Interest Rate During Period |  |  |  |  | 2.37% |  |  |  |  |  |
Term Loan, Average interest rate during period with patronage credits |  |  |  |  | 1.60% |  |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  | $ 75,000,000 |  |  |
Medium-term Notes [Member] | Term Loan Due 2026 [Member] | Base Rate [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 0.875% |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2026 [Member] | Base Rate [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 1.125% |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2026 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 1.875% |  |  |  |  |  |
Medium-term Notes [Member] | Term Loan Due 2026 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Basis spread on variable interest rate |  |  |  |  | 2.125% |  |  |  |  |  |
Senior notes [Member] | 6.375% Senior Notes Due 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  | $ 0 | 299,990,000 |  |  |  |  |
Unamortized premium on 6.375% senior notes |  |  |  |  | 0 | 1,215,000 |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Term Loan, Face Amount |  | $ 300,000,000 |  |  |  |  |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | 300,000,000 |  |  |  |  |  |  |  |  |
Extinguishment of Debt, Amount | $ 115,500,000 | 184,500,000 |  |  |  |  |  |  |  |  |
Gain (loss) on extinguishment of debt |  |  |  |  | (14,300,000) |  |  |  |  |  |
Debt extinguishment premiums paid |  |  |  |  | (11,300,000) |  |  |  |  |  |
Net write-off of unamortized deferred financing costs and unamortized premium |  |  |  |  | (3,000,000) |  |  |  |  |  |
Senior notes [Member] | 250 million original new 6.375% Senior Notes due 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  | 6.375% |  |  |  |  |  |  |
Debt Exchange, Original Debt, Amount |  |  |  | $ 250,000,000 |  |  |  |  |  |  |
Percentage of Senior Notes tendered and accepted for exchange |  |  |  | 100.00% |  |  |  |  |  |  |
Senior notes [Member] | 50 million additional new 6.375% Senior Notes due 2020 [Member] [Member] |  |  |  |  |  |  |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Interest rate |  |  | 6.375% |  |  |  |  |  |  |  |
Debt Exchange, Original Debt, Amount |  |  | $ 49,990,000 |  |  |  |  |  |  |  |
Percentage of Senior Notes tendered and accepted for exchange |  |  | 99.98% |  |  |  |  |  |  |  |
Senior notes [Member] | 250 million original old 6.375% Senior Notes due 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Term Loan, Face Amount |  |  |  |  |  |  |  |  |  |  | $ 250,000,000
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  |  |  | $ 250,000,000
Interest rate |  |  |  |  |  |  |  |  |  |  | 6.375%
Senior notes [Member] | 50 million additional old 6.375% Senior Notes due 2020 [Member] |  |  |  |  |  |  |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Term Loan, Face Amount |  |  |  |  |  |  |  |  |  | $ 50,000,000 |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  |  |  |  |  | $ 50,000,000 |
Premium rate on 6.375% senior notes |  |  |  |  |  |  |  |  |  | 103.50% |
Senior notes [Member] | 5.625% Senior Notes Due 2024 [Member] |  |  |  |  |  |  |  |  |  |  |
Debt [Line Items] |  |  |  |  |  |  |  |  |  |  |
Long-term Debt |  |  |  |  | $ 350,000,000 | $ 0 |  |  |  |  |
Term Loan [Abstract] |  |  |  |  |  |  |  |  |  |  |
Term Loan, Face Amount |  | 350,000,000 |  |  |  |  |  |  |  |  |
Senior Notes [Abstract] |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  | $ 350,000,000 |  |  |  |  |  |  |  |  |
Interest rate |  | 5.625% |  |  | 5.625% |  |  |  |  |  |

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