Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Consolidated Balance Sheets [Abstract]    
Allowance for doubtful accounts receivable $ 1,513 $ 2,584
Common stock, par value per share $ 0.01 $ 0.01
Common stock, shares authorized 190,000,000 190,000,000
Common stock, shares outstanding 89,127,942 89,076,578