Supplemental Cash Flow Information (Tables)

9 Months Ended

Sep. 30, 2014

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,
	2014		2013
Supplemental non-cash investing and financing activities:
Value of common stock issued in acquisitions	$	2,043	$	52,711
Final Florida Chemical acquisition adjustment	1,162		—
Value of common stock issued in payment of accrued liability	600		—
Equipment acquired through capital leases	—		866
Exercise of stock options by common stock surrender	1,183		2,979
Supplemental cash payment information:
Interest paid	$	1,038	$	1,410
Income taxes paid	18,393		13,343