Note 15 - Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

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

As of December 31, 2019	Fair Value Measurements Using						Total at
	Level 1		Level 2		Level 3		Fair Value
	(In thousands)
Assets
Securities available-for-sale
U.S. Treasury securities	$	74,936	$	—	$	—	$	74,936
U.S. government agency entities		—		90,796		—		90,796
U.S. government sponsored entities		—		224,443		—		224,443
Mortgage-backed securities		—		887,790		—		887,790
Collateralized mortgage obligations		—		552		—		552
Corporate debt securities		—		173,325		—		173,325
Total securities available-for-sale		74,936		1,376,906		—		1,451,842
Equity securities
Mutual funds		6,277		—		—		6,277
Preferred stock of government sponsored entities		10,529		—		—		10,529
Other equity securities		11,199		—		—		11,199
Total equity securities		28,005		—		—		28,005
Warrants		—		—		39		39
Interest rate swaps		—		2,181		—		2,181
Foreign exchange contracts		—		2,411		—		2,411
Total assets	$	102,941	$	1,381,498	$	39	$	1,484,478
Liabilities
Option contracts	$	—	$	7	$	—	$	7
Interest rate swaps		—		14,229		—		14,229
Foreign exchange contracts		—		1,415		—		1,415
Total liabilities	$	—	$	15,651	$	—	$	15,651

As of December 31, 2018	Fair Value Measurements Using						Total at
	Level 1		Level 2		Level 3		Fair Value
	(In thousands)
Assets
Securities available-for-sale
U.S. Treasury securities	$	124,751	$	—	$	—	$	124,751
U.S. government agency entities		—		5,871		—		5,871
U.S. government sponsored entities		—		388,363		—		388,363
Mortgage-backed securities		—		656,744		—		656,744
Collateralized mortgage obligations		—		977		—		977
Corporate debt securities		—		65,803		—		65,803
Total securities available-for-sale		124,751		1,117,758		—		1,242,509
Equity securities
Mutual funds		6,094		—		—		6,094
Preferred stock of government sponsored entities		7,822		—		—		7,822
Other equity securities		11,182		—		—		11,182
Total equity securities		25,098		—		—		25,098
Warrants		—		—		184		184
Interest rate swaps		—		7,810		—		7,810
Foreign exchange contracts		—		397		—		397
Total assets	$	149,849	$	1,125,965	$	184	$	1,275,998
Liabilities
Option contracts	$	—	$	6	$	—	$	6
Interest rate swaps		—		1,543		—		1,543
Foreign exchange contracts		—		1,763		—		1,763
Total liabilities	$	—	$	3,312	$	—	$	3,312

Fair Value Measurements, Nonrecurring [Table Text Block]

	As of December 31, 2019								Total Losses/(Gains)
	Fair Value Measurements Using						Total at		For the Twelve Months Ended
	Level 1		Level 2		Level 3		Fair Value		December 31, 2019		December 31, 2018
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	—	$	—	$	6,196	$	6,196	$	—	$	—
Commercial mortgage loans		—		—		25,566		25,566		—		—
Residential mortgage and equity lines		—		—		5,320		5,320		—		—
Total impaired loans		—		—		37,082		37,082		—		—
Other real estate owned (1)		—		6,490		4,343		10,833		681		(619	)
Investments in venture capital		—		—		1,604		1,604		167		330
Total assets	$	—	$	6,490	$	43,029	$	49,519	$	848	$	(289	)

	As of December 31, 2018								Total Losses/(Gains)
	Fair Value Measurements Using						Total at		For the Twelve Months Ended
	Level 1		Level 2		Level 3		Fair Value		December 31, 2018			December 31, 2017
	(In thousands)
Assets
Impaired loans by type:
Commercial loans	$	—	$	—	$	4,733	$	4,733	$	—		$	25
Commercial mortgage loans		—		—		26,186		26,186		—			—
Residential mortgage and equity lines		—		—		6,850		6,850		—			—
Total impaired loans		—		—		37,769		37,769		—			25
Other real estate owned (1)		—		9,023		4,343		13,366		(619	)		457
Investments in venture capital		—		—		2,162		2,162		330			392
Total assets	$	—	$	9,023	$	44,274	$	53,297	$	(289	)	$	874