Note 13 - Supplemental Cash Flow and Other Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Feb. 29, 2012	Dec. 31, 2011	Dec. 31, 2010
Capital Expenditures Incurred but Not yet Paid	$ 1,000,000		$ 3,700,000	$ 2,300,000
Accrued Liabilities, Current	42,620,000		47,443,000
Employee-related Liabilities, Current	14,000,000		19,700,000
Liabilities Related To Working Capital And Additional Consideration			$ 8,200,000
Earn Out Period	2 years	1 year	1 year