Note 1 - General (Detail) - Business Acquisitions - Proforma Information (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Revenues	$ 230,593		$ 221,470
Net income(1)	$ 6,724	[1]	$ 3,390	[1]

[1] Includes pro-forma adjustments for purchase price depreciation and amortization as if those intangibles were recorded as of January 1, of the year preceding its acquisition.