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Long-Term Debt - Components of Long-Term Debt and Capital Leases (Parenthetical) (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2016 | Dec. 31, 2015
Debt Instrument [Line Items] |  |
Unamortized discount and deferred financing costs | $ 16,556 | $ 17,586
Senior Secured Asset Based Revolving Credit Facility, Due 2020 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Feb. 26, 2020 |
Debt instrument stated percentage | 2.25% |
Debt instrument, description of variable rate basis | One month LIBOR |
Unamortized discount and deferred financing costs | $ 5,335 | 5,593
Revenue Bonds Series 2014 Due December 2044 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Dec. 01, 2044 |
Debt instrument stated percentage | 3.75% |
Unamortized discount and deferred financing costs | $ 1,361 | 1,407
Revenue Bonds Series 2005R-2, Due January 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Jan. 01, 2025 |
Debt instrument stated percentage | 6.25% |
Unamortized discount and deferred financing costs | $ 553 | 566
Revenue Bonds Series 2015 Due August 2035 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Aug. 01, 2035 |
Debt instrument stated percentage | 5.125% |
Unamortized discount and deferred financing costs | $ 812 | 830
Long-Term Revenue Bonds Series 2013 Due April 2036 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Apr. 01, 2036 |
Debt instrument stated percentage | 4.75% |
Unamortized discount and deferred financing costs | $ 628 | 636
Revenue Bonds Series 2013 Due April 2029 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Apr. 01, 2029 |
Debt instrument stated percentage | 4.00% |
Unamortized discount and deferred financing costs | $ 659 | 690
Revenue Bonds Series, 2005R-1, Due January 2025 [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Apr. 01, 2025 |
Capital Lease Obligations [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument maturity date | Apr. 01, 2023 |
Debt instrument stated percentage | 7.70% |
Notes Payable [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument maturity date | Dec. 01, 2017 |
Debt instrument stated percentage | 7.00% |
Senior Subordinated Notes Due 2019 Notes [Member] |  |
Debt Instrument [Line Items] |  |
Debt instrument, due date | Feb. 15, 2019 |
Debt instrument stated percentage | 7.75% |
Unamortized discount and deferred financing costs | $ 7,174 | 7,829
Revenue Bond Series 2013 Letter Of Credit Backed Due 2029 [Member] |  |
Debt Instrument [Line Items] |  |
Unamortized discount and deferred financing costs | $ 34 | $ 35

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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