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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2017
Fair Value Disclosures [Abstract] |
Summary Of Fair Value Estimates For Financial And Nonfinancial Assets And Liabilities Measured At Fair Value On Nonrecurring Basis | The following table summarizes the fair value estimates for financial and nonfinancial assets and liabilities measured at fair value on a nonrecurring basis by category as of the acquisition date:
|  |  |  |  | Fair Value Measurements During 2017, Using |
Description |  | Fair Value Measurements at Acquisition Date |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Vandalia current assets |  | $ | 10,166 |  |  | $ | — |  |  | $ | — |  |  | $ | 10,166 |
Vandalia property, plant and equipment |  |  | 13,981 |  |  |  | — |  |  |  | — |  |  |  | 13,981 |
Vandalia intangible assets subject to amortization |  |  | 6,900 |  |  |  | — |  |  |  | — |  |  |  | 6,900 |
Vandalia other non-current assets |  |  | 29 |  |  |  | — |  |  |  | — |  |  |  | 29 |
Vandalia goodwill |  |  | 9,452 |  |  |  | — |  |  |  | — |  |  |  | 9,452 |
Vandalia non-current liabilities |  |  | (1,794 | ) |  |  | — |  |  |  | — |  |  |  | (1,794 | )
|  | $ | 38,734 |  |  | $ | — |  |  | $ | — |  |  | $ | 38,734 |
Summay of Fair Value Estimates for Financial and Nonfinancial Assets and Liabilities Measured at Fair Value on Nonrecurring basis | The following table summarizes assets and liabilities measured at fair value on a recurring basis for the interest rate swap derivative financial instrument as of December 31, 2016.
|  |  |  |  | Fair Value Measurements as of December 31, 2016 |
Description |  | December 31, 2016 |  |  | Quoted Prices in Active Markets for Identical Assets (Level 1) |  |  | Significant Other Observable Inputs (Level 2) |  |  | Significant Unobservable Inputs (Level 3) |
Derivative asset—current |  | $ | 69 |  |  | $ | — |  |  | $ | 69 |  |  | $ | — |
Derivative asset—noncurrent |  |  | 6 |  |  |  | — |  |  |  | 6 |  |  |  | — |
Derivative liability—current |  |  | (1,903 | ) |  |  | — |  |  |  | (1,903 | ) |  |  | — |
Derivative liability—noncurrent |  |  | (1,028 | ) |  |  | — |  |  |  | (1,028 | ) |  |  | — |
|  | $ | (2,856 | ) |  | $ | — |  |  | $ | (2,856 | ) |  | $ | — |

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- Definition Tabular disclosure of assets and liabilities by class, including financial instruments measured at fair value that are classified in shareholders' equity, if any, that are measured at fair value on a nonrecurring basis in periods after initial recognition (for example, impaired assets). Disclosures may include, but are not limited to: (a) the fair value measurements recorded and the reasons for the measurements and (b) the level within the fair value hierarchy in which the fair value measurements are categorized in their entirety (levels 1, 2, 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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