CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Allowance for Doubtful Accounts Receivable (in dollars)	$ 357	$ 891
Common Stock, Par Value (in dollars per share)	$ 0.01	$ 0.01
Common Stock, Shares Authorized	300,000,000	300,000,000
Common Stock, Shares Issued	163,348,000	162,144,000
Common Stock, Shares Outstanding	160,640,000	159,761,000
Treasury Stock, Shares	2,708,000	2,383,000