Defined Contribution Plan (Tables)

12 Months Ended

Dec. 31, 2017

Compensation And Retirement Disclosure [Abstract]

Statement of Company Made Matching Contributions

The Company made matching contributions in the aggregate amount as follows:

	Year Ended		Year Ended		Year Ended
	December 31,		December 31,		December 31,
	2017		2016		2015
Matching contributions	$	938	$	775	$	523