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Debt and Financing Arrangements - Summary of Reconciliation of Debt (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Finance Leases, described below	$ 80,839	$ 90,501
Total debt	160,839	136,430
Less: current portion of long-term debt	19,727	19,405
Long-term debt, less current portion	141,112	117,025
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Agreement with Banks, described below	$ 80,000	$ 45,929

X

- Definition

Amount of long-term debt and finance lease liability due after one year or beyond the normal operating cycle, if longer.

+ References

No definition available.

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- Definition

Amount of long-term debt and finance leases due within one year or the normal operating cycle, if longer.

+ References

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- Definition

Amount of long-term debt and finance lease liability including current maturities.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Present value of lessee's discounted obligation for lease payments from finance 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

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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
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