Note 13 - Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2018

Notes Tables

Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block]

	As of December 31,
	2018		2017
	(In thousands)
Commitments to extend credit	$	2,691,579	$	2,366,368
Standby letters of credit		245,087		140,814
Commercial letters of credit		35,759		27,353
Bill of lading guarantees		730		24
Total	$	2,973,155	$	2,534,559

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

Year Ending December 31,	Commitments
	(In thousands)
2019	$	8,835
2020		7,220
2021		6,406
2022		5,406
2023		4,208
Thereafter		4,899
Total minimum lease payments	$	36,974

Schedule of Future Rental Payments to Be Received for Operating Leases [Table Text Block]

Year Ending December 31,	Commitments
	(In thousands)
2019	$	214
2020		120
2021		79
2022		25
Total minimum lease payments to be received	$	438