Annual report pursuant to Section 13 and 15(d)

CONSOLIDATED BALANCE SHEETS (Parenthetical)

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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
CONSOLIDATED BALANCE SHEETS    
Allowance for doubtful accounts $ 3,673 $ 3,374
Preferred Stock, Par Value (in dollars per share) $ 0.01 $ 0.01
Preferred Stock, Shares Authorized 10,000,000 10,000,000
Preferred Stock, Shares, Issued 0 0
Preferred Stock, Shares, Outstanding 0 0
Common Stock, Par Value (in dollars per share) $ 0.01 $ 0.01
Common Stock, Shares Authorized 250,000,000 250,000,000
Common Stock, Shares, Issued 38,626,378 38,488,825
Common Stock, Shares, Outstanding 35,586,916 37,815,199
Treasury stock, shares at cost 3,039,462 673,626