Note 12 - Deferred Compensation Plan (Tables)

6 Months Ended

Jun. 30, 2019

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,
	2019		2018
Deferred compensation plan asset components:
Cash surrender value of corporate-owned life insurance policies	$	14,644	$	13,103
Fair value of mutual funds and money market funds		21,317		18,867
Total	$	35,961	$	31,970
Deferred compensation plan assets reported in:
Other long-term assets	$	35,961	$	31,970
Deferred compensation plan liabilities reported in:
Accrued compensation and related benefits (short-term)	$	425	$	447
Other long-term liabilities		36,594		32,283
Total	$	37,019	$	32,730