Note 3 - Debt Securities (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Available-for-sale Securities Reconciliation [Table Text Block]

	December 31, 2018
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
(Amounts in thousands)
U.S. Agency securities	$	1,108	$	5	$	-		$	1,113
U.S. Treasury securities		19,970		-		(10	)		19,960
Municipal securities		96,886		912		(509	)		97,289
Mortgage-backed Agency securities		35,513		14		(773	)		34,754
Total	$	153,477	$	931	$	(1,292	)	$	153,116

	December 31, 2017
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
(Amounts in thousands)
U.S. Agency securities	$	11,289	$	17	$	(10	)	$	11,296
U.S. Treasury securities		19,987		-		(16	)		19,971
Municipal securities		101,552		2,203		(107	)		103,648
Single issue trust preferred securities		9,367		-		(483	)		8,884
Mortgage-backed Agency securities		22,095		46		(415	)		21,726
Total	$	164,290	$	2,266	$	(1,031	)	$	165,525

Investments Classified by Contractual Maturity Date [Table Text Block]

(Amounts in thousands)	U.S. Agency Securities		U.S. Treasury Securities		Municipal Securities		Total
Amortized cost maturity:
One year or less	$	-	$	19,970	$	-	$	19,970
After one year through five years		-		-		14,447		14,447
After five years through ten years		1,108		-		82,439		83,547
After ten years		-		-		-		-
Amortized cost	$	1,108	$	19,970	$	96,886		117,964
Mortgage-backed securities								35,513
Total amortized cost							$	153,477
Fair value maturity:
One year or less	$	-	$	19,960	$	-	$	19,960
After one year through five years		-		-		14,595		14,595
After five years through ten years		1,113		-		82,694		83,807
After ten years		-		-		-		-
Fair value	$	1,113	$	19,960	$	97,289		118,362
Mortgage-backed securities								34,754
Total fair value							$	153,116

(Amounts in thousands)	U.S. Agency Securities		Corporate Notes		Total
Amortized cost maturity:
One year or less	$	17,887	$	7,126	$	25,013
After one year through five years		-		-		-
After five years through ten years		-		-		-
After ten years		-		-		-
Total amortized cost	$	17,887	$	7,126	$	25,013
Fair value maturity:
One year or less	$	17,867	$	7,123	$	24,990
After one year through five years		-		-		-
After five years through ten years		-		-		-
After ten years		-		-		-
Total fair value	$	17,867	$	7,123	$	24,990

Debt Securities, Held-to-maturity [Table Text Block]

	December 31, 2018
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
(Amounts in thousands)
U.S. Agency securities	$	17,887	$	-	$	(20	)	$	17,867
Corporate securities		7,126		-		(3	)		7,123
Total	$	25,013	$	-	$	(23	)	$	24,990

	December 31, 2017
	Amortized		Unrealized		Unrealized			Fair
	Cost		Gains		Losses			Value
(Amounts in thousands)
U.S. Agency securities	$	17,937	$	-	$	(49	)	$	17,888
Corporate securities		7,212		-		(16	)		7,196
Total	$	25,149	$	-	$	(65	)	$	25,084

Schedule of Available-for-sale and Held-to-maturity Municipal Securities By State [Table Text Block]

	December 31, 2018
	Percent of Municipal Portfolio			Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
(Amounts in thousands)
Minnesota		9.93	%	$	9,586	$	88	$	(15	)	$	9,659
New York		9.40	%		9,063		78		-			9,141
Wisconsin		9.14	%		8,914		36		(53	)		8,897
Ohio		8.78	%		8,541		47		(43	)		8,545
Massachusetts		8.46	%		8,165		93		(27	)		8,231
Texas		7.55	%		7,378		55		(91	)		7,342
Connecticut		5.93	%		5,715		53		-			5,768
Iowa		5.20	%		5,138		10		(90	)		5,058
New Jersey		4.74	%		4,521		87		-			4,608
Other		30.88	%		29,865		365		(190	)		30,040
Total		100.00	%	$	96,886	$	912	$	(509	)	$	97,289

	December 31, 2017
	Percent of Municipal Portfolio			Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
(Amounts in thousands)
New York		10.64	%	$	10,804	$	223	$	-		$	11,027
Minnesota		10.12	%		10,280		211		(1	)		10,490
Wisconsin		8.74	%		8,913		147		-			9,060
Massachusetts		8.57	%		8,691		208		(14	)		8,885
Ohio		8.36	%		8,551		123		(13	)		8,661
Texas		7.22	%		7,388		122		(21	)		7,489
Connecticut		6.82	%		6,929		142		-			7,071
Iowa		5.27	%		5,463		30		(35	)		5,458
New Jersey		4.67	%		4,670		167		-			4,837
Other		29.59	%		29,863		830		(23	)		30,670
Total		100.00	%	$	101,552	$	2,203	$	(107	)	$	103,648

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

	December 31, 2018
	Less than 12 Months					12 Months or Longer					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses
(Amounts in thousands)
U.S. Treasury securities	$	19,960	$	(10	)	$	-	$	-		$	19,960	$	(10	)
Municipal securities		7,116		(62	)		18,081		(447	)		25,197		(509	)
Mortgage-backed Agency securities		15,762		(99	)		15,344		(674	)		31,106		(773	)
Total	$	42,838	$	(171	)	$	33,425	$	(1,121	)	$	76,263	$	(1,292	)

	December 31, 2017
	Less than 12 Months					12 Months or Longer					Total
	Fair		Unrealized			Fair		Unrealized			Fair		Unrealized
	Value		Losses			Value		Losses			Value		Losses
(Amounts in thousands)
U.S. Agency securities	$	10,054	$	(10	)	$	-	$	-		$	10,054	$	(10	)
U.S. Treasury securities		19,972		(16	)		-		-			19,972		(16	)
Municipal securities		8,047		(55	)		2,314		(52	)		10,361		(107	)
Single issue trust preferred securities		-		-			8,884		(483	)		8,884		(483	)
Mortgage-backed Agency securities		4,276		(25	)		14,069		(390	)		18,345		(415	)
Total	$	42,349	$	(106	)	$	25,267	$	(925	)	$	67,616	$	(1,031	)

Schedule of Held to Maturity Debt Securities [Table Text Block]

	December 31, 2018
	Less than 12 Months				12 Months or Longer					Total
	Fair		Unrealized		Fair		Unrealized			Fair		Unrealized
	Value		Losses		Value		Losses			Value		Losses
(Amounts in thousands)
U.S. Agency securities	$	-	$	-	$	17,867	$	(20	)	$	17,867	$	(20	)
Corporate securities		-		-		7,123		(3	)		7,123		(3	)
Total	$	-	$	-	$	24,990	$	(23	)	$	24,990	$	(23	)

	December 31, 2017
	Less than 12 Months					12 Months or Longer				Total
	Fair		Unrealized			Fair		Unrealized		Fair		Unrealized
	Value		Losses			Value		Losses		Value		Losses
(Amounts in thousands)
U.S. Agency securities	$	17,888	$	(49	)	$	-	$	-	$	17,888	$	(49	)
Corporate securities		7,196		(16	)		-		-		7,196		(16	)
Total	$	25,084	$	(65	)	$	-	$	-	$	25,084	$	(65	)

Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]

	Year Ended December 31,
	2018		2017		2016
(Amounts in thousands)
Beginning balance	$	-	$	-	$	-
Additions for credit losses on securities not previously recognized		-		-		4,646
Additions for credit losses on securities previously recognized		-		-		-
Reduction for securities sold/realized losses		-		-		(4,646	)
Ending balance	$	-	$	-	$	-

Realized Gain (Loss) on Investments [Table Text Block]

	Year Ended December 31,
	2018			2017			2016
(Amounts in thousands)
Gross realized gains	$	-		$	-		$	757
Gross realized losses		(618	)		(661	)		(422	)
Net (loss) gain on sale of securities	$	(618	)	$	(661	)	$	335