Note 16 - Share-Based Compensation (Detail) - Effect of Recording Share-Based Compensation Expense (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Restricted stock/unit award expense	$ 5,877		$ 5,607		$ 4,712
Salary stock award expense	127		464		609
Stock option expense			291		317
Total share-based compensation expense	6,004		6,362		5,638
Income tax benefit	2,456		2,602		2,199
Share-based compensation expense, net of tax	3,548		3,760		3,439
Basic earnings per common share (in Dollars per share)	$ 0.05		$ 0.05		$ 0.05
Diluted earnings per common share (in Dollars per share)	$ 0.05		$ 0.05		$ 0.05
Cash flows provided by (used in) operating activities	170		(179)		350
Cash flows (used in) provided by financing activities (1)	$ (21)	[1]	$ 47	[1]	$ (189)	[1]

[1] Amount represents cash flows resulting from the tax benefits of tax deductions in excess of recognized compensation expense.