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Lease Obligations - Additional information (Details) - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2019 | Jan. 01, 2019 | Dec. 31, 2018
Operating And Finance Leases [Line Items] |  |  |
Additional right of use lease assets | $ 22,968 |  | $ 0
Long-term finance and operating lease obligations | $ 17,084 |  | 0
Option to extend lease term (up to) | 5 years |  |
Option to terminate leases, period | 1 year |  |
Minimum lease payments required | $ 27,501 |  |
Leased assets capitalized |  |  | 2,600
Capital lease obligations classified as current |  |  | 1,100
Capital lease obligations outstanding |  |  | $ 2,700
Subsidiaries [Member] | Employees [Member] |  |  |
Operating And Finance Leases [Line Items] |  |  |
Minimum lease payments required | $ 4,800 |  |
Lease amortization period | 4 years 9 months 18 days |  |
Minimum [Member] |  |  |
Operating And Finance Leases [Line Items] |  |  |
Remaining lease term | 1 year |  |
Maximum [Member] |  |  |
Operating And Finance Leases [Line Items] |  |  |
Remaining lease term | 8 years |  |
Accounting Standards Update 2016-02 [Member] |  |  |
Operating And Finance Leases [Line Items] |  |  |
Additional right of use lease assets |  | $ 15,100 |
Long-term finance and operating lease obligations |  | $ 15,100 |

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- Definition Lessee, operating and finance leases, option to extend, term. + References No definition available. + Details
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- Definition Lessee, operating and finance leases, option to terminate, period. + References No definition available. + Details
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- Definition It represents Lessee Operating Lease Amortization Period. + References No definition available. + Details
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- Definition Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=119400593&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -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 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 + Details
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- Definition Amount of capital lease obligation due within one year or the normal operating cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84164758&loc=d3e45023-112735 Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84164817&loc=d3e45280-112737 Reference 3: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of lessee's undiscounted obligation for lease payments for operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918701-209980 + Details
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