Note 14 - Employee Benefits (Tables)

12 Months Ended

Dec. 31, 2016

Notes Tables

Schedule of Net Periodic Benefit Cost Not yet Recognized [Table Text Block]

	Projected Payments
2017	$	23,000
2018		18,000
2019		12,000
2020		10,000
2021		2,000
Total	$	65,000

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

				Weighted-					Weighted-
				average					average
				Exercise					Exercise
	2016			Price		2015			Price
Outstanding, January 1	$	31,949		$	25.03	$	46,451		$	27.90
Expired		(2,125	)		40.24		(10,802	)		36.93
Exercised		(500	)		23.00		(2,175	)		21.31
Forfeited		-			-		(1,525	)		33.53
Outstanding, December 31	$	29,324		$	23.67	$	31,949		$	25.03
Exercisable, December 31	$	29,324		$	23.67	$	31,949		$	25.03

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

			Outstanding						Exercisable
					Contractual		Average				Average
	Exercise				Average		Exercise				Exercise
Grant Date	Price		Shares		Life		Price		Shares		Price
May 16, 2007		37.48		1,337		0.36		37.48		1,337		37.48
December 10, 2007		37.00		1,950		0.93		37.00		1,950		37.00
January 2, 2008		36.25		1,337		1.00		36.25		1,337		36.25
November 10, 2008		23.00		16,500		1.85		23.00		16,500		23.00
May 9, 2011		17.55		8,200		4.35		17.55		8,200		17.55
				29,324						29,324