XML 96 R79.htm IDEA: XBRL DOCUMENT v3.22.0.1
Quarterly Financial Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Quarterly Financial Information                      
Revenues $ 39,441 $ 37,472 $ 38,129 $ 40,280 $ 46,273 $ 38,173 $ 28,481 $ 46,410 $ 155,322 $ 159,337 $ 185,304
Net income available to common stockholders $ 12,726 $ 10,909 $ 18,126 $ 13,642 $ 17,470 $ 12,114 $ 1,773 $ 63,370      
Net income per common share available to common stockholders:                      
Basic net income per share (in dollars per share) $ 0.32 $ 0.28 $ 0.46 $ 0.35 $ 0.45 $ 0.31 $ 0.05 $ 1.60 $ 1.41 $ 2.42 $ 2.03
Diluted net income per share (in dollars per share) 0.32 0.28 0.46 0.35 0.45 0.31 0.05 1.60 1.41 2.42 2.02
Dividends declared and paid per common share 0.57 0.57 0.57 0.57 0.57 0.57 0.57 0.57      
Dividends declared and paid per common share (in dollars per share) $ 0.57 $ 0.57 $ 0.57 $ 0.57 $ 0.57 $ 0.57 $ 0.57 $ 0.57 $ 2.280 $ 2.280 $ 2.280