Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Assets or Liabilities Recorded at Fair Value (Detail)

v3.6.0.2
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