Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2013

Supplemental Cash Flow Elements [Abstract]

Components of supplemental cash flow information

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

	Six months ended June 30,
	2013		2012
Supplemental non-cash investing and financing activities:
Value of shares issued in acquisition of Florida Chemical	$	52,711	$	—
Fair value of warrant liability reclassified to additional paid-in capital	—		13,973
Equipment acquired through capital leases	691		873
Exercise of stock options by common stock surrender	2,418		—
Supplemental cash payment information:
Interest paid	$	780	$	2,950
Income taxes paid	10,157		8,574