Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Share - Diluted (Detail)

v3.20.2
Earnings Per Share - Diluted (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Jun. 30, 2020
Jun. 30, 2019
Net Income (Loss) Attributable to Parent [Abstract]                
Net income attributable to common shareholders $ 15,747 $ 1,537 $ 5,461 $ 17,202 $ 4,212 $ 5,154 $ 22,745 $ 26,568
Earnings Per Share, Diluted [Abstract]                
Weighted average number of basic common shares outstanding (in shares) 51,489,211     51,414,619     51,489,211 51,414,619
Effect of dilutive securities:                
Weighted average number of diluted common shares outstanding (in shares) 51,646,385     51,422,899     51,623,627 51,414,887
Net income per diluted common share attributable to common stockholders (in dollars per share) $ 0.30     $ 0.33     $ 0.44 $ 0.52
Restricted Stock                
Effect of dilutive securities:                
Restricted stock grants under 2018 Equity Incentive Plan (in shares) 157,174     8,280     134,416 268