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Fair Value Measurements - Summary of Fair Value Assets Measured on Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Fair value information related to assets    
Assets $ 3,230 $ 2,638
Quoted Prices in Active Markets (Level 1)    
Fair value information related to assets    
Assets 3,230 2,638
Money market funds    
Fair value information related to assets    
Assets [1] 123 121
Money market funds | Quoted Prices in Active Markets (Level 1)    
Fair value information related to assets    
Assets [1] 123 121
Other mutual funds    
Fair value information related to assets    
Assets [2] 3,107 2,517
Other mutual funds | Quoted Prices in Active Markets (Level 1)    
Fair value information related to assets    
Assets [2] $ 3,107 $ 2,517
[1]

(1)

Money market funds are included in “Cash and cash equivalents” in the Consolidated Balance Sheets. These investments are classified as available-for-sale and are recorded at fair value. There have been no realized gains or losses related to these investments and we have not experienced any redemption restrictions with respect to any of the money market mutual funds.
[2] Other mutual funds are included in “Other investments and assets” in the Consolidated Balance Sheets