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Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($)
$ in Thousands
Jun. 30, 2015
Dec. 31, 2014
Allowance for bad debts $ 934 $ 868
Preferred stock - par value $ 0.001 $ 0.001
Preferred stock - shares authorized 5,000,000 5,000,000
Preferred stock - shares issued 0 0
Common stock - par value $ 0.001 $ 0.001
Common stock - shares authorized 75,000,000 75,000,000
Common stock - shares issued 34,017,657 33,477,810
Common stock - shares outstanding 29,600,072 29,060,225
Treasury stock - shares 4,417,585 4,417,585