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Selected Quarterly Financial Data
12 Months Ended
Dec. 31, 2020
Selected Quarterly Financial Information [Abstract]  
Selected Quarterly Financial Data Selected Quarterly Financial Data (Unaudited)
Selected quarterly financial data is as follows:
 For the Quarter Ended
 March 31June 30September 30December 31
2020
Total revenues$29,621 $29,264 $31,158 $31,824 
Income before income tax expense2,089 3,149 389 611 
Net income1,523 2,276 222 551 
Basic net income per share$6.03 $9.02 $0.88 $2.23 
Diluted net income per share5.94 8.91 0.87 2.19 
2019
Total revenues$24,666 $25,466 $26,674 $27,407 
Income before income tax expense1,945 1,453 1,489 1,098 
Net income1,551 1,139 1,183 934 
Basic net income per share$6.03 $4.44 $4.64 $3.69 
Diluted net income per share5.91 4.36 4.55 3.62