Note 11 - Deferred Compensation Plan (Tables)

9 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Deferred Compensation Plan [Table Text Block]

	September 30,		December 31,
	2018		2017
Deferred compensation plan asset components:
Cash surrender value of corporate-owned life insurance policies	$	14,141	$	11,455
Fair value of mutual funds and money market funds		16,284		16,625
Total	$	30,425	$	28,080
Deferred compensation plan assets reported in:
Other long-term assets	$	30,425	$	28,080
Deferred compensation plan liabilities reported in:
Accrued compensation and related benefits (short-term)	$	447	$	356
Other long-term liabilities		30,412		28,087
Total	$	30,859	$	28,443