Supplemental Cash Flow Information

12 Months Ended

Dec. 31, 2016

Supplemental cash flow information is as follows (in thousands):



	Year ended December 31,
	2016		2015		2014
Supplemental non-cash investing and financing activities:
Value of common stock issued in acquisitions	$	3,268	$	1,014	$	2,043
Final Florida Chemical acquisition adjustment	—		—		1,162
Value of common stock issued in payment of accrued liability	—		—		600
Exercise of stock options by common stock surrender	50		1,332		1,198

Supplemental cash payment information:
Interest paid	$	2,024	$	1,398	$	1,285
Income taxes paid, net of refunds	333		1,547		22,389