Note 18 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2017

Notes Tables

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]

	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Available for sale securities
U.S. Government agency debt obligations	$	169,700,000		$	0	$	169,700,000		$	0
Mortgage-backed securities		38,792,000			0		38,792,000			0
Municipal general obligation bonds		121,293,000			0		116,102,000			5,191,000
Municipal revenue bonds		3,978,000			0		3,978,000			0
Other investments		1,981,000			0		1,981,000			0
Derivatives
Interest rate swap agreement		(2,000	)		0		(2,000	)		0
Total	$	335,742,000		$	0	$	330,551,000		$	5,191,000

	Total			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
Available for sale securities
U.S. Government agency debt obligations	$	152,040,000		$	0	$	152,040,000		$	0
Mortgage-backed securities		47,392,000			0		47,392,000			0
Municipal general obligation bonds		119,047,000			0		112,648,000			6,399,000
Municipal revenue bonds		7,631,000			0		7,631,000			0
Other investments		1,950,000			0		1,950,000			0
Derivatives
Interest rate swap agreement		(84,000	)		0		(84,000	)		0
Total	$	327,976,000		$	0	$	321,577,000		$	6,399,000

Fair Value, Assets and Liabilities Measured on Nonrecurring Basis, Valuation Techniques [Table Text Block]

			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
			Assets		Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Impaired loans	$	5,836,000	$	0	$	0	$	5,836,000
Foreclosed assets		2,260,000		0		0		2,260,000
Total	$	8,096,000	$	0	$	0	$	8,096,000

			Quoted Prices
			in Active		Significant
			Markets for		Other		Significant
			Identical		Observable		Unobservable
			Assets		Inputs		Inputs
	Total		(Level 1)		(Level 2)		(Level 3)
Impaired loans	$	9,896,000	$	0	$	0	$	9,896,000
Foreclosed assets		469,000		0		0		469,000
Total	$	10,365,000	$	0	$	0	$	10,365,000