Basis of Presentation (Tables)

6 Months Ended

Jun. 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 June 30,					Six Months Ended June 30,
	2018			2017		2018			2017
Basic earnings per share calculation:
Net income	$	22,065		$	11,239	$	41,819		$	20,992
Dividends paid on and undistributed earnings allocated to      participating securities		(117	)		—		(223	)		—
Earnings attributable to common shareholders	$	21,948		$	11,239	$	41,596		$	20,992
Weighted-average basic shares outstanding		30,678,732			25,741,968		30,646,189			24,944,633
Basic earnings per share	$	0.72		$	0.44	$	1.36		$	0.84
Diluted earnings per share:
Earnings attributable to common shareholders	$	21,948		$	11,239	$	41,596		$	20,992
Weighted-average basic shares outstanding		30,678,732			25,741,968		30,646,189			24,944,633
Weighted-average diluted shares contingently issuable		615,312			559,490		629,657			505,786
Weighted-average diluted shares outstanding		31,294,044			26,301,458		31,275,846			25,450,419
Diluted earnings per share	$	0.70		$	0.43	$	1.33		$	0.82