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Debt Obligations - Narrative (Details) - USD ($) | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Jun. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Feb. 28, 2019 | Dec. 31, 2018
Long Term Debt |  |  |  |  |  |  |
Loss on debt extinguishment | $ 0 |  | $ 0 | $ 220,000 | $ 0 |  |
Gross amount of debt | 1,279,216,000 |  |  | 1,279,216,000 |  |  | $ 1,358,430,000
Revolving credit facility |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |
Debt issuance costs, line of credit |  | $ 2,800,000 |  |  |  |  |
Loss on debt extinguishment |  | 200,000 |  |  |  |  |
Note payable |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |
Gross amount of debt | 7,565,000 |  |  | 7,565,000 |  | $ 8,100,000 | 0
Note payable at fixed interest rates ranging from 2.60% to 2.97%, maturing in July 2024, secured by an aircraft |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |
Gross amount of debt | $ 9,587,000 |  |  | $ 9,587,000 |  |  | $ 10,937,000
Fixed rate (as a percent) | 3.18% |  |  | 3.18% |  |  |
LIBOR | Minimum | Note payable |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |
Variable rate spread |  |  |  | 1.85% |  |  |
LIBOR | Maximum | Note payable |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |
Variable rate spread |  |  |  | 2.50% |  |  |
Revolving Credit Facility |  |  |  |  |  |  |
Long Term Debt |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 1,000,000,000.0 | $ 890,000,000.0 |  | $ 1,000,000,000.0 |  |  |
Line of credit facility, maximum borrowing capacity under accordion feature | $ 1,300,000,000 |  |  | $ 1,300,000,000 |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=119400593&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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 4: http://fasb.org/us-gaap/role/ref/legacyRef -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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