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Fair Value Measurements - Assets or Liabilities Recorded at Fair Value (Detail) - Fair Value Based on Significant Other Observable Inputs (Level 2) [Member] - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Assets: |  |
Cash surrender value of life insurance policies | $ 31,475 | $ 29,055
Cash flow swaps designated as hedges | 2,772 |
Total assets | 34,247 | 29,055
Liabilities: |  |
Cash flow swaps designated as hedges | 6,135 | 9,094
Cash flow swaps not designated as hedges | 346 | 913
Deferred compensation plan | 14,824 | 13,551
Total liabilities | $ 21,305 | $ 23,558

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + 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 (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Fair value portion of the amount that could be realized under a life insurance contract or contracts owned by the entity, commonly known as corporate-owned life insurance (COLI) or bank-owned life insurance (BOLI). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Surrender Value -URI http://asc.fasb.org/extlink&oid=6507153 + Details
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