FHLB and other borrowings (Tables)

3 Months Ended

Mar. 31, 2016

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments [Table Text Block]

The Company’s FHLB and other borrowings and weighted average interest rates are summarized below:

	March 31, 2016				December 31, 2015
	Amount		Rate		Amount		Rate
	(in thousands)
By type of borrowing:
FHLB borrowings	$	631,501	1.30	%	$	656,587	1.26	%
Repurchase agreements ("REPO")		15,000	5.95			15,000	5.95
Total borrowings	$	646,501	1.41		$	671,587	1.37
By remaining period to maturity:
One year or less	$	330,501	0.64			270,587	0.64
One to two years		121,000	1.90			171,000	1.56
Two to three years		105,000	1.96			130,000	1.84
Three to four years		50,000	1.66			35,000	1.60
Four to five years		40,000	3.42			65,000	2.82
Total borrowings	$	646,501	1.41	%	$	671,587	1.37	%