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Selected Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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Dec. 31, 2016 | [1] | Sep. 30, 2016 | [1] | Jun. 30, 2016 | [1] | Mar. 31, 2016 | [1] | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Selected Quarterly Financial Information [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
REVENUE | $ 45,029 | $ 45,252 | $ 47,083 | $ 43,016 | $ 39,838 | $ 36,703 | $ 35,526 | $ 33,831 | $ 37,151 | $ 37,069 | $ 34,690 | $ 35,731 | $ 180,380 |  | $ 145,898 |  | $ 144,641 |
GROSS MARGIN | 31,195 | 29,782 | 30,301 | 27,621 | 26,516 | 22,982 | 21,554 | 19,667 | 22,635 | 23,799 | 22,384 | 22,473 | 118,899 |  | 90,719 |  | 91,291 |
NET INCOME (LOSS) | $ 2,897 | $ 2,993 | $ 2,347 | $ 2,541 | $ 2,636 | $ 2,145 | $ (502) | $ (274) | $ 1,776 | $ 2,326 | $ 2,161 | $ 1,059 | $ 10,778 |  | $ 4,005 |  | $ 7,322 |
INCOME (LOSS) PER COMMON SHARE - DILUTED | $ 0.09 | $ 0.09 | $ 0.07 | $ 0.08 | $ 0.09 | $ 0.07 | $ (0.02) | $ (0.01) | $ 0.06 | $ 0.08 | $ 0.08 | $ 0.04 | $ 0.32 | [2] | $ 0.14 | [2] | $ 0.25 | [2]
Gain on sale of Medafor investment |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 891 |  | $ 530 |
[1] | In January 2016 the Company completed its acquisition of On-X Life Technologies Holdings, Inc., which is being operated as a wholly owned subsidiary of CryoLife. In 2016 the Company also sold its HeRO Graft product line and its ProCol product line, and ceased sales of these products during 2016.
[2] | The Company excluded stock options from the calculation of diluted weighted-average common shares outstanding if the per share value, including the sum of (i) the exercise price of the options and (ii) the amount of the compensation cost attributed to future services and not yet recognized, was greater than the average market price of the shares, because the inclusion of these stock options would be antidilutive to income per common share. Accordingly, stock options to purchase 1,000, 710,000, and 335,000 shares for the years ended December 31, 2016, 2015, and 2014, respectively, were excluded from the calculation of diluted weighted-average common shares outstanding.

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