Note 14 - Stock-Based Compensation (Details) - Summary of Information about Stock-Based Awards Outstanding (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 28.23	$ 30.09	$ 32.40	$ 34.35
Options Outstanding Number of Shares Outstanding	4,710	3,563	2,934	2,335
Options Outstanding Weighted Average Remaining Contractual Life in Years	3 years 255 days	4 years
Options Outstanding Aggregate Intrinsic Value (in Dollars)	$ 11,474	$ 173
Options Exercisable Number of Shares Exercisable	2,123	1,592
Options Exercisable Weighted Average Remaining Contractual Life in Years	2 years 36 days	2 years 219 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	1,480	141
$15.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 15.00	$ 15.00
Options Outstanding Number of Shares Outstanding	21	32
Options Outstanding Weighted Average Remaining Contractual Life in Years	292 days	1 year 292 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	258	136
Options Exercisable Number of Shares Exercisable	21	32
Options Exercisable Weighted Average Remaining Contractual Life in Years	292 days	1 year 292 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	258	136
$18.56 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 18.56	$ 18.56
Options Outstanding Number of Shares Outstanding	45	45
Options Outstanding Weighted Average Remaining Contractual Life in Years	5 years 292 days	6 years 292 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	389	32
Options Exercisable Number of Shares Exercisable	45
Options Exercisable Weighted Average Remaining Contractual Life in Years	5 years 292 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	389
$19.10 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 19.10	$ 19.10
Options Outstanding Number of Shares Outstanding	23	30
Options Outstanding Weighted Average Remaining Contractual Life in Years	4 years 292 days	5 years 292 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	182	5
Options Exercisable Number of Shares Exercisable	23	30
Options Exercisable Weighted Average Remaining Contractual Life in Years	4 years 292 days	5 years 292 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	182	5
$19.69 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 19.69	$ 19.69
Options Outstanding Number of Shares Outstanding	26	30
Options Outstanding Weighted Average Remaining Contractual Life in Years	5 years 219 days	6 years 219 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	197
Options Exercisable Number of Shares Exercisable	26
Options Exercisable Weighted Average Remaining Contractual Life in Years	5 years 219 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	197
$20.13 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 20.13	$ 20.13
Options Outstanding Number of Shares Outstanding	578	594
Options Outstanding Weighted Average Remaining Contractual Life in Years	5 years 109 days	6 years 109 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	4,089
$20.54 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 20.54
Options Outstanding Number of Shares Outstanding	120
Options Outstanding Weighted Average Remaining Contractual Life in Years	5 years 109 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	800
$23.34 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 23.34
Options Outstanding Number of Shares Outstanding	1,138
Options Outstanding Weighted Average Remaining Contractual Life in Years	5 years 146 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	4,404
$25.65 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 25.65	$ 25.65
Options Outstanding Number of Shares Outstanding	578	598
Options Outstanding Weighted Average Remaining Contractual Life in Years	4 years 109 days	5 years 109 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	901
Options Exercisable Number of Shares Exercisable	144
Options Exercisable Weighted Average Remaining Contractual Life in Years	4 years 109 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	225
$25.74 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 25.74	$ 25.74
Options Outstanding Number of Shares Outstanding	23	23
Options Outstanding Weighted Average Remaining Contractual Life in Years	1 year 292 days	2 years 292 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	33
Options Exercisable Number of Shares Exercisable	23	23
Options Exercisable Weighted Average Remaining Contractual Life in Years	1 year 292 days	2 years 292 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	33
$26.70 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 26.70
Options Outstanding Number of Shares Outstanding	45
Options Outstanding Weighted Average Remaining Contractual Life in Years	6 years 292 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	23
$26.84 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 26.84	$ 26.84
Options Outstanding Number of Shares Outstanding	529	552
Options Outstanding Weighted Average Remaining Contractual Life in Years	2 years 73 days	3 years 73 days
Options Outstanding Aggregate Intrinsic Value (in Dollars)	196
Options Exercisable Number of Shares Exercisable	529	276
Options Exercisable Weighted Average Remaining Contractual Life in Years	2 years 73 days	3 years 73 days
Options Exercisable Aggregate Intrinsic Value (in Dollars)	$ 196
$28.19 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 28.19	$ 28.19
Options Outstanding Number of Shares Outstanding	30	30
Options Outstanding Weighted Average Remaining Contractual Life in Years	3 years 292 days	4 years 292 days
Options Exercisable Number of Shares Exercisable	30	30
Options Exercisable Weighted Average Remaining Contractual Life in Years	3 years 292 days	4 years 292 days
$29.21 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 29.21	$ 29.21
Options Outstanding Number of Shares Outstanding	8	8
Options Outstanding Weighted Average Remaining Contractual Life in Years	3 years 109 days	4 years 109 days
Options Exercisable Number of Shares Exercisable	8	8
Options Exercisable Weighted Average Remaining Contractual Life in Years	3 years 109 days	4 years 109 days
$29.95 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 29.95	$ 29.95
Options Outstanding Number of Shares Outstanding	547	567
Options Outstanding Weighted Average Remaining Contractual Life in Years	3 years 109 days	4 years 109 days
Options Exercisable Number of Shares Exercisable	273	139
Options Exercisable Weighted Average Remaining Contractual Life in Years	3 years 109 days	4 years 109 days
$34.13 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 34.13	$ 34.13
Options Outstanding Number of Shares Outstanding	222	225
Options Outstanding Weighted Average Remaining Contractual Life in Years	2 years 109 days	3 years 109 days
Options Exercisable Number of Shares Exercisable	222	225
Options Exercisable Weighted Average Remaining Contractual Life in Years	2 years 109 days	3 years 109 days
$38.50 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 38.50	$ 38.50
Options Outstanding Number of Shares Outstanding	23	23
Options Outstanding Weighted Average Remaining Contractual Life in Years	2 years 292 days	3 years 292 days
Options Exercisable Number of Shares Exercisable	23	23
Options Exercisable Weighted Average Remaining Contractual Life in Years	2 years 292 days	3 years 292 days
$38.85 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 38.85	$ 38.85
Options Outstanding Number of Shares Outstanding	8	8
Options Outstanding Weighted Average Remaining Contractual Life in Years	73 days	1 year 73 days
Options Exercisable Number of Shares Exercisable	8	8
Options Exercisable Weighted Average Remaining Contractual Life in Years	73 days	1 year 73 days
$42.08 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 42.08	$ 42.08
Options Outstanding Number of Shares Outstanding	329	340
Options Outstanding Weighted Average Remaining Contractual Life in Years	109 days	1 year 109 days
Options Exercisable Number of Shares Exercisable	329	340
Options Exercisable Weighted Average Remaining Contractual Life in Years	109 days	1 year 109 days
$45.78 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 45.78	$ 45.78
Options Outstanding Number of Shares Outstanding	397	412
Options Outstanding Weighted Average Remaining Contractual Life in Years	1 year 109 days	2 years 109 days
Options Exercisable Number of Shares Exercisable	397	412
Options Exercisable Weighted Average Remaining Contractual Life in Years	1 year 109 days	2 years 109 days
$52.98 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)	$ 52.98	$ 52.98
Options Outstanding Number of Shares Outstanding	23	23
Options Outstanding Weighted Average Remaining Contractual Life in Years	292 days	1 year 292 days
Options Exercisable Number of Shares Exercisable	23	23
Options Exercisable Weighted Average Remaining Contractual Life in Years	292 days	1 year 292 days
$20.10 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)		$ 20.10
Options Outstanding Number of Shares Outstanding		8
Options Outstanding Weighted Average Remaining Contractual Life in Years		1 year 292 days
Options Exercisable Number of Shares Exercisable		8
Options Exercisable Weighted Average Remaining Contractual Life in Years		1 year 292 days
$37.90 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Price (in Dollars per share)		$ 37.90
Options Outstanding Number of Shares Outstanding		15
Options Outstanding Weighted Average Remaining Contractual Life in Years		292 days
Options Exercisable Number of Shares Exercisable		15
Options Exercisable Weighted Average Remaining Contractual Life in Years		292 days