Note 22 - Fair Value (Detail) - Fair Values of our Defined Benefit Pension Plan Assets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Pension plan assets:
Pension plan assets	$ 63,501		$ 62,990		$ 54,713
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Pension plan assets:
Pension plan assets	16,009	[1]	17,970	[1]
Mutual Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Pension plan assets:
Pension plan assets	0	[1]	0	[1]
Mutual Funds [Member]
Pension plan assets:
Pension plan assets	16,009	[1]	17,970	[1]
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Pension plan assets:
Pension plan assets	6,510		5,954
US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Pension plan assets:
Pension plan assets	7,295		7,029
US Government Agencies Debt Securities [Member]
Pension plan assets:
Pension plan assets	13,805		12,983
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Pension plan assets:
Pension plan assets	0		0
Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Pension plan assets:
Pension plan assets	8,653		5,954
Corporate Debt Securities [Member]
Pension plan assets:
Pension plan assets	8,653		5,954
Common Stock [Member] | Fair Value, Inputs, Level 1 [Member]
Pension plan assets:
Pension plan assets	15,001		16,537
Common Stock [Member] | Fair Value, Inputs, Level 2 [Member]
Pension plan assets:
Pension plan assets	0		0
Common Stock [Member]
Pension plan assets:
Pension plan assets	15,001		16,537
Common Trust Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Pension plan assets:
Pension plan assets	0		0
Common Trust Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Pension plan assets:
Pension plan assets	10,033		9,546
Common Trust Funds [Member]
Pension plan assets:
Pension plan assets	10,033		9,546
Fair Value, Inputs, Level 1 [Member]
Pension plan assets:
Pension plan assets	37,520		40,461
Fair Value, Inputs, Level 2 [Member]
Pension plan assets:
Pension plan assets	$ 25,981		$ 22,529

[1] Includes mutual funds, money market funds, cash, cash equivalents, and accrued interest.