Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2013

Supplemental Cash Flow Elements [Abstract]

Components of supplemental cash flow information

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

	Year ended December 31,
	2013		2012		2011
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		—
Value exchanged in conversion of preferred stock to common stock	—		—		11,205
Value of common stock issued in payment of convertible notes	—		—		5,165
Value of common stock issued in payment of preferred stock dividends	—		—		3,254
Value of common stock issued in payment of term loan debt	—		—		1,398
Equipment acquired through capital leases	754		1,263		1,334
Exercise of stock options by common stock surrender	3,907		—		—
Supplemental cash payment information:
Interest paid	$	1,859	$	5,521	$	7,627
Income taxes paid (refunded)	17,783		14,049		(904		)