Note 11 - Deferred Compensation Plan (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Deferred Compensation Arrangement with Individual, Excluding Share-based Payments and Postretirement Benefits by Title of Individual and Type of Deferred Compensation [Table Text Block]

	June 30,		December 31,
	2020		2019
Deferred compensation plan asset components:
Cash surrender value of corporate-owned life insurance policies	$	17,279	$	16,883
Fair value of mutual funds and money market funds		22,177		21,975
Total	$	39,456	$	38,858
Deferred compensation plan assets reported in:
Other long-term assets	$	39,456	$	38,858
Deferred compensation plan liabilities reported in:
Accrued compensation and related benefits (short-term)	$	155	$	425
Other long-term liabilities		41,087		39,665
Total	$	41,242	$	40,090