Note 22 - Regulatory Matters (Tables)

12 Months Ended

Dec. 31, 2013

Disclosure Text Block [Abstract]

Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations [Table Text Block]

	As of December 31, 2013										As of December 31, 2012
	Company					Bank					Company					Bank
	Balance		Percentage			Balance		Percentage			Balance		Percentage			Balance		Percentage
	(Dollars in thousands)
Tier I Capital (to risk- weighted assets)	$	1,288,892		15.04	%	$	1,244,480		14.53	%	$	1,426,566		17.36	%	$	1,259,005		15.33	%
Tier I Capital minimum requirement		342,899		4.00			342,701		4.00			328,713		4.00			328,440		4.00
Excess	$	945,993		11.04	%	$	901,779		10.53	%	$	1,097,853		13.36	%	$	930,565		11.33	%
Total Capital (to risk- weighted assets)	$	1,401,319		16.35	%	$	1,352,415		15.79	%	$	1,571,060		19.12	%	$	1,402,691		17.08	%
Total Capital minimum requirement		685,799		8.00			685,402		8.00			657,426		8.00			656,880		8.00
Excess	$	715,520		8.35	%	$	667,013		7.79	%	$	913,634		11.12	%	$	745,811		9.08	%
Tier I Capital (to average assets) Leverage ratio	$	1,288,892		12.48	%	$	1,244,480		12.06	%	$	1,426,566		13.82	%	$	1,259,005		12.22	%
Minimum leverage requirement		413,158		4.00			412,815		4.00			412,844		4.00			412,272		4.00
Excess	$	875,734		8.48	%	$	831,665		8.06	%	$	1,013,722		9.82	%	$	846,733		8.22	%
Total average assets (1)	$	10,328,952				$	10,320,368				$	10,321,104				$	10,306,790
Risk-weighted assets	$	8,572,487				$	8,567,523				$	8,217,821				$	8,211,004