Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2015

Supplemental Cash Flow Elements [Abstract]

Components of supplemental cash flow information

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

	Nine months ended September 30,
	2015		2014
Supplemental non-cash investing and financing activities:
Value of common stock issued in acquisitions	$	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	1,126		1,183
Supplemental cash payment information:
Interest paid	$	1,043	$	1,038
Income taxes paid	3,044		18,393