Note 10 - Retirement Plan

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Pension and Other Postretirement Benefits Disclosure [Text Block]

10 . Retirement Plan

We participate in a multi-employer defined contribution retirement plan (the

“401k

Plan”) administered by a

third

-party service provider, and the Company contributes to the

401k

Plan on behalf of its employees based upon a matching formula. During the years ended

December 31, 2018,

2017

and

2016

our contributions to the

401k

Plan were

$23,354,

$29,265,

and

$33,871,

respectively.