Basis of Presentation (Tables)

9 Months Ended

Sep. 30, 2018

Accounting Policies [Abstract]

Summary of Basic and Diluted Earnings Per Common Share

The following is a summary of the basic and diluted earnings per common share calculation for each of the periods presented:

	Three Months Ended September 30,					Nine Months Ended September 30,
	2018			2017		2018			2017
Basic earnings per share calculation:
Net income	$	21,377		$	8,388	$	63,196		$	29,380
Dividends paid on and undistributed earnings allocated to      participating securities		(114	)		—		(337	)		—
Earnings attributable to common shareholders	$	21,263		$	8,388	$	62,859		$	29,380
Weighted-average basic shares outstanding		30,692,668			30,004,952		30,661,852			26,649,942
Basic earnings per share	$	0.69		$	0.28	$	2.05		$	1.10
Diluted earnings per share calculation:
Earnings attributable to common shareholders	$	21,263		$	8,388	$	62,859		$	29,380
Weighted-average basic shares outstanding		30,692,668			30,004,952		30,661,852			26,649,942
Weighted-average diluted shares contingently issuable		646,960			599,585		636,802			548,431
Weighted-average diluted shares outstanding		31,339,628			30,604,537		31,298,654			27,198,373
Diluted earnings per share	$	0.68		$	0.27	$	2.01		$	1.08