CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) Parentheticals - $ / shares	Mar. 31, 2016	Dec. 31, 2015
Balance Sheet Related Disclosures [Abstract]
Common Stock, Shares Authorized	300,000,000	300,000,000
Common Stock, Par Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares, Issued	178,924,901	178,284,137
Common Stock, Shares, Outstanding	178,377,287	177,893,562
Treasury Stock, Shares	547,614	390,575