Employee Benefit Plans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Compensation expense	$ 6,005	$ 4,261	$ 3,363
Employee Stock
Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits [Line Items]
Discount form market price	15.00%
Period for discount from market price	6 months
Maximum employee subscription rate	10.00%
Compensation expense for employee stock purchase plan	$ 2,254	$ 925	$ 967
Shares available for grant (in shares)	335,487