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Note 17 - Other Supplemental Information - Summary of Other Supplemental Information (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Income tax, net of refunds $ 42,153 $ 43,374
Interest 20,404 11,168
Increases (Decreases) in capital lease obligations (522) 123
Dividends declared but not paid 1,961 1,947
Rent expense $ 74,183 $ 65,982