Note 11 - Leases (Tables)

12 Months Ended

Dec. 31, 2019

Notes Tables

Lease, Cost [Table Text Block]

	Year Ended
	December 31, 2019
	(Dollars in thousands)
Operating lease cost 1	$	7,690
Sublease income (Note 16)		(150	)
Net lease cost	$	7,540

Schedule of Lease Cash Flow Information [Table Text Block]

	Year Ended
	December 31, 2019
	(Dollars in thousands)
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	7,255
Leased assets obtained in exchange for new operating lease liabilities	$	3,255

Schedule of Lease Terms and Discount Rates [Table Text Block]

	December 31, 2019
Weighted-average remaining lease term (years)		6.1
Weighted-average discount rate		5.5	%

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

	Year Ended
	December 31,
2020	$	6,300
2021		6,705
2022		6,314
2023		5,294
2024		4,873
Thereafter		8,289
Total operating lease payments 1	$	37,775
Less: Interest		5,605
Present value of operating lease liabilities 2	$	32,170