Employee Benefit Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Compensation Plan [Line Items]
Percent of employee match		100.00%
Maximum annual employee contribution matched by employer		$ 2,000
Vesting period		4 years
Employer matching contributions expense	$ 600,000	$ 500,000
Maximum
Compensation Plan [Line Items]
Percentage of employees eligible compensation	90.00%