Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements - Assets and Liabilities Recorded at Fair Value (Details)

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Fair Value Measurements - Assets and Liabilities Recorded at Fair Value (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Other current assets    
Assets:    
Cash flow swaps and interest rate caps designated as hedges   $ 1,800
Other assets    
Assets:    
Cash flow swaps and interest rate caps designated as hedges $ 100 3,000
Fair Value Based on Significant Other Observable Inputs (Level 2)    
Assets:    
Cash surrender value of life insurance policies 32,799 31,395
Cash flow swaps and interest rate caps designated as hedges 97 4,839
Total assets 32,896 36,234
Liabilities:    
Deferred compensation plan 17,890 19,848
Total liabilities $ 17,890 $ 19,848