Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurement - Assets Measured on Nonrecurring Basis (Details)

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Fair Value Measurement - Assets Measured on Nonrecurring Basis (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total gains (losses), goodwill   $ 0  
Nonrecurring Basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Total gains (losses), property and equipment, net $ (7,229,000)   $ (3,405,000)
Total gains (losses), goodwill (9,425,000)   0
Reported Value Measurement | Nonrecurring Basis      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net 750,000   2,000,000
Total gains (losses), property and equipment, net (800,000)    
Goodwill 0   0
Estimate of Fair Value Measurement | Nonrecurring Basis | Quoted prices in active market (Level 1)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net 0   0
Goodwill 0   0
Estimate of Fair Value Measurement | Nonrecurring Basis | Significant other observable inputs (Level 2)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net 750,000   2,000,000
Goodwill 0   0
Estimate of Fair Value Measurement | Nonrecurring Basis | Significant other unobservable inputs (Level 3)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net 0   0
Goodwill $ 0   $ 0