Quarterly report pursuant to Section 13 or 15(d)

Balance Sheets (Parenthetical)

v2.4.0.8
Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Allowances for accounts receivable $ 3,417 $ 3,390
Allowances for inventories 110 100
Allowances for rental equipment 282 156
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 100,000 100,000
Preferred stock, shares issued 0 66,666
Preferred stock, shares outstanding 0 66,666
Preferred stock, Liquidation preference 0 250
Common stock, par value $ 0.001 $ 0.001
Common stock, shares authorized 60,000,000 60,000,000
Common stock, shares issued 18,151,551 280,974
Common stock, shares outstanding 18,151,551 280,974
Redeemable convertible preferred stock
    
Preferred stock, par value $ 0.001 $ 0.001
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares issued 0 9,541,631
Preferred stock, shares outstanding 0 9,541,631
Preferred stock, Liquidation preference $ 0 $ 136,660