Basis of Presentation (Tables)

12 Months Ended

Dec. 31, 2016

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:

	Year Ended
	December 31,
	2016		2015		2014
Basic earnings per share calculation:
Net income	$	40,591	$	47,856	$	32,462
Weighted-average basic shares outstanding		19,165,182		17,180,000		17,180,000
Basic earnings per share	$	2.12	$	2.79	$	1.89
Diluted earnings per share:
Net income	$	40,591	$	47,856	$	32,462
Weighted-average basic shares outstanding		19,165,182		17,180,000		17,180,000
Average diluted common shares outstanding		146,992		—		—
Weighted-average diluted shares outstanding		19,312,174		17,180,000		17,180,000
Diluted earnings per share	$	2.10	$	2.79	$	1.89
Unaudited pro forma earnings per share:
Pro forma net income	$	39,422	$	32,995	$	22,356
Weighted-average basic shares outstanding		19,165,182		17,180,000		17,180,000
Pro forma basic earnings per share	$	2.06	$	1.92	$	1.30
Unaudited pro forma diluted earnings per share:
Pro forma net income	$	39,422	$	32,995	$	22,356
Weighted-average diluted shares outstanding		19,312,174		17,180,000		17,180,000
Pro forma diluted earnings per share	$	2.04	$	1.92	$	1.30