$LH SEC Filings

Filing Filed On
PRIMARY DOCUMENT 13 Feb 2012
PRIMARY DOCUMENT 13 Feb 2012
PRIMARY DOCUMENT 13 Feb 2012
PRIMARY DOCUMENT 13 Feb 2012
FORM 8-K 2011 EARNINGS RELEASE 10 Feb 2012
REGULATION FD DISCLOSURE 10 Feb 2012
12/31/2011 10 Feb 2012
SC 13G 09 Feb 2012
PRIMARY DOCUMENT 27 Jan 2012
FORM 8-K 18 Jan 2012
FORM 8_K 10 Jan 2012
FORM 8-K 04 Jan 2012
FORM 8-K 03 Jan 2012
FORM 8-K 21 Dec 2011
AMENDMENT NO. 16 TO THE SCHEDULE TO-T 16 Dec 2011
FORM 8-K 16 Dec 2011
PRIMARY DOCUMENT 16 Dec 2011
PRIMARY DOCUMENT 15 Dec 2011
PRIMARY DOCUMENT 13 Dec 2011
AMENDMENT #15 TO SCHEDULE TO 12 Dec 2011