Financials & Filings Annual Reports Title View 2017 Annual Report 2017 Annual Report 1.6 MB 2016 Annual Report 2016 Annual Report 1.6 MB Proxy Statements Filing date View Apr 25, 2018 View HTML 0001047469-18-003173.pdf 0001047469-18-003173.xls Apr 24, 2017 View HTML 0001047469-17-002853.pdf 0001047469-17-002853.xls Form 10-K Filing date View Mar 12, 2018 View HTML 0001047469-18-001539.pdf 0001047469-18-001539.xls EX-101.INS - EX-101.INS Mar 15, 2017 View HTML 0001047469-17-001623.pdf 0001047469-17-001623.xls EX-101.INS - EX-101.INS Form 10-Q Filing date View Aug 03, 2018 View HTML 0001104659-18-049513.pdf 0001104659-18-049513.xls EX-101.INS - XBRL INSTANCE DOCUMENT May 07, 2018 View HTML 0001104659-18-030911.pdf 0001104659-18-030911.xls EX-101.INS - XBRL INSTANCE DOCUMENT