Note 3 - Supplemental Cash Flow Disclosure

12 Months Ended

Dec. 31, 2018

Notes to Financial Statements

Cash Flow, Supplemental Disclosures [Text Block]

3. Supplemental Cash Flow Disclosure

The table below sets forth supplemental disclosures of cash flow information and non-cash investing and financing activities.

	Year Ended December 31,
	2018			2017		2016
	(Dollars in thousands)
Cash paid for:
Interest, net of interest capitalized	$	726		$	637	$	717
Income taxes	$	30,157		$	49,830	$	29,144
Non-cash investing and financing activities:
Unrealized holding gains (losses) on marketable securities, net of tax	$	(2,536	)	$	15,204	$	6,127