Note 10 - Deferred Compensation Plan (Tables)

9 Months Ended

Sep. 30, 2017

Notes Tables

Schedule of Deferred Compensation Plan [Table Text Block]

	September 30,		December 31,
	2017		2016
Deferred compensation plan asset components:
Cash surrender value of corporate-owned life insurance policies	$	11,218	$	8,180
Fair value of mutual funds		13,097		12,108
Total	$	24,315	$	20,288
Deferred compensation plan assets reported in:
Other long-term assets	$	24,315	$	20,288
Deferred compensation plan liabilities reported in:
Accrued compensation and related benefits (short-term)	$	341	$	479
Other long-term liabilities		24,146		19,836
Total	$	24,487	$	20,315