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Borrowings - Narrative (Details) | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Dec. 31, 2016 USD ($) lender | Dec. 31, 2015 USD ($) | Sep. 30, 2016 USD ($) | Jan. 31, 2010 USD ($)
Line of Credit Facility [Abstract] |  |  |  |
Amount of available borrowings under the Secured Revolving Credit Facility | $ 142,500,000 |  |  |
Senior Notes [Abstract] |  |  |  |
Loss on extinguishment of debt | 0 | $ 828,000 |  |
Secured Debt [Abstract] |  |  |  |
Total debt, net | 1,336,483,000 |  | $ 1,331,878,000 |
Senior Notes |  |  |  |
Secured Debt [Abstract] |  |  |  |
Total debt, net | $ 1,208,173,000 |  | 1,207,526,000 |
Senior Notes | 8 1/8% Senior Notes Maturing June 2016 |  |  |  |
Senior Notes [Abstract] |  |  |  |
Call price and make-whole premiums provided for by 2018 Notes |  | $ 22,900,000 |  |
Term Loan |  |  |  |
Senior Notes [Abstract] |  |  |  |
Call price and make-whole premiums provided for by 2018 Notes |  |  | 50,000,000 |
Other Long-term Debt [Abstract] |  |  |  |
Debt instrument term | 2 years |  |  |
Principal payment | $ 17,500,000 |  |  |
Stated interest rate on debt instrument (percent) | 6.75% |  |  |
Minimum inventory required | $ 1,250,000,000.00 |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |
Stated interest rate on debt instrument (percent) | 6.75% |  |  |
Aggregate principal amount of debt | $ 140,000,000 |  |  |
Unamortized accretion | 725,000 |  | 800,000 |
Debt Issuance Costs, Net | 1,195,000 |  | 1,451,000 |
Secured Debt [Abstract] |  |  |  |
Total debt, net | $ 53,080,000 |  | 52,669,000 |
Term Loan | London Interbank Offered Rate (LIBOR) |  |  |  |
Other Long-term Debt [Abstract] |  |  |  |
Stated interest rate on debt instrument (percent) | 55000.00% |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |
Stated interest rate on debt instrument (percent) | 55000.00% |  |  |
Junior Subordinated Notes |  |  |  |
Other Long-term Debt [Abstract] |  |  |  |
Stated interest rate on debt instrument (percent) | 7.987% |  |  |
Junior Subordinated Notes [Abstract] |  |  |  |
Stated interest rate on debt instrument (percent) | 7.987% |  |  |
Effective period of debt instrument interest rate | 10 years |  |  |
Debt Instrument, Face Amount Modification |  |  |  | $ 75,000,000
Unamortized accretion | $ 40,387,000 |  | 40,903,000 |
Secured Debt [Abstract] |  |  |  |
Total debt, net | $ 60,387,000 |  | 59,870,000 |
Weighted average fixed interest rate of debt (percent) | 4.02% |  |  |
Other secured notes payable |  |  |  |
Secured Debt [Abstract] |  |  |  |
Total debt, net | $ 14,843,000 |  | 11,813,000 |
Weighted average fixed interest rate of debt (percent) | 3.12% |  |  |
Revolving Credit Facility |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |
Credit facility borrowing capacity | $ 180,000,000 |  | 145,000,000 |
Inventory assets pledged as collateral | $ 800,000,000 |  | 1,000,000,000 |
Number of lenders | lender | 3 |  |  |
Borrowings outstanding under facility | $ 0 |  | $ 0 |
Letters of credit secured using cash collateral | $ 37,500,000 |  |  |
Revolving Credit Facility | Maximum |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |
Aggregate collateral ratio | 4.00 |  | 5.00 |
Revolving Credit Facility | Minimum |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |
Aggregate collateral ratio | 1.00 |  | 1.00 |
Letter of Credit, Cash Secured |  |  |  |
Line of Credit Facility [Abstract] |  |  |  |
Letters of credit secured using cash collateral | $ 11,500,000 |  | $ 12,100,000 |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399 + Details
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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 The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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