Note 17 - Employee Benefit Plans (Detail) - Pension Benefits (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Benefit obligation at beginning of year (Projected Benefit Obligation)	$ 77,011	$ 70,970
Service cost	2,481	2,147	2,050
Interest cost	4,129	3,933	3,766
Actuarial loss	13,352	1,890
Benefits paid	(2,203)	(1,929)
Fair value of assets at end of year	54,896	43,299	41,521
Funded status	(39,874)	(33,712)
Pension liability	(39,874)	(33,712)
Accumulated other comprehensive loss (pre-tax)	32,486	23,889
Benefit obligation at end of year	94,770	77,011	70,970
Fair value of assets at beginning of year	43,299	41,521
Actual return on plan assets	4,766	1,672
Employer contributions	$ 9,034	$ 2,035