|12 Months Ended|
Dec. 31, 2018
|Retirement Benefits [Abstract]|
The Company sponsors a profit sharing and savings plan under Section 401(k) of the Internal Revenue Code, covering substantially all domestic employees. The Company made voluntary employer matching contributions as follows:
The entire disclosure for pension and other postretirement benefits.
Reference 1: http://www.xbrl.org/2003/role/presentationRef