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Long-Term Debt - Narrative (Details) - USD ($) $ in Thousands | 6 Months Ended |
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Jun. 30, 2019 | Jun. 30, 2018 | Dec. 31, 2018
Debt Instrument [Line Items] |  |  |
Total debt, net of unamortized loan fees | $ 747,006 |  | $ 770,242
Unamortized loan fees | $ 13,453 |  | $ 14,994
Effective rate | 3.79% |  |
Cash paid for interest, net of amounts capitalized | $ 14,500 | $ 16,900 |
Term loan A-1 |  |  |
Debt Instrument [Line Items] |  |  |
Periodic payment of principal | 3,600 |  |
Periodic payment principal, period two | 7,300 |  |
Periodic payment principal, period three | $ 10,900 |  |
Term loan A-1 | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Variable interest rate | 1.75% |  |
Term loan A-2 |  |  |
Debt Instrument [Line Items] |  |  |
Periodic payment of principal | $ 1,200 |  |
Additional payment to required quarterly payments | $ 15,000 |  |
Term loan A-2 | London Interbank Offered Rate (LIBOR) |  |  |
Debt Instrument [Line Items] |  |  |
Variable interest rate | 2.00% |  |

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- Definition Debt Instrument, Periodic Payment Principal, Period Three + References No definition available. + Details
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- Definition Amount of the required periodic payments applied to principal period two. + References No definition available. + Details
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- Definition Amount after unamortized loan fees of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 6 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6036836-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of cash paid for interest, excluding capitalized interest, classified as operating activity. Includes, but is not limited to, payment to settle zero-coupon bond for accreted interest of debt discount and debt instrument with insignificant coupon interest rate in relation to effective interest rate of borrowing attributable to accreted interest of debt discount. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=98513485&loc=d3e4297-108586 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3367-108585 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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