XML 77 R61.htm IDEA: XBRL DOCUMENT v3.20.4
Quarterly Financial Data (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Income Statement [Abstract]                      
Total revenue $ 54,088 $ 54,200 $ 52,268 $ 51,350 $ 51,428 $ 51,299 $ 50,956 $ 49,540 $ 211,906 $ 203,223 $ 191,232
Net income (loss) 13,360 1,092 799 (374) 24,020 4,912 14,856 2,566 14,877 46,354 26,610
Net income (loss) allocable to common shares $ 13,261 $ 1,090 $ 789 $ (372) $ 23,784 $ 4,863 $ 14,709 $ 2,540 $ 14,768 $ 45,896 $ 26,288
Total earnings per share—Basic $ 0.14 [1] $ 0.01 [1] $ 0.01 [1] $ 0.00 [1] $ 0.26 [1] $ 0.05 [1] $ 0.16 [1] $ 0.03 [1] $ 0.16 $ 0.51 $ 0.30
Total earnings per share—Diluted $ 0.14 [1] $ 0.01 [1] $ 0.01 [1] $ 0.00 [1] $ 0.26 [1] $ 0.05 [1] $ 0.16 [1] $ 0.03 [1] $ 0.16 $ 0.51 $ 0.30
[1] The summation of quarterly per share amounts may not equal the full year amounts due to rounding.