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Income Per Common Share (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
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income | $ 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 |
Net income (loss) allocated to participating securities |  |  |  |  |  |  |  |  |  |  |  |  | (208) |  | (87) |  | (161) |
Net income allocated to common shareholders |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,570 |  | $ 3,918 |  | $ 7,161 |
Basic weighted-average common shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  | 31,855,000 |  | 27,744,000 |  | 27,379,000 |
Basic income per common share |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.33 |  | $ 0.14 |  | $ 0.26 |
Net income (loss) allocated to participating securities, diluted |  |  |  |  |  |  |  |  |  |  |  |  | $ (202) |  | $ (87) |  | $ (158) |
Net income allocated to common shareholders, diluted |  |  |  |  |  |  |  |  |  |  |  |  | $ 10,576 |  | $ 3,918 |  | $ 7,164 |
Effect of dilutive stock options and awards |  |  |  |  |  |  |  |  |  |  |  |  | 967,000 |  | 798,000 |  | 934,000 |
Diluted weighted-average common shares outstanding |  |  |  |  |  |  |  |  |  |  |  |  | 32,822,000 |  | 28,542,000 |  | 28,313,000 |
Diluted income per common share | $ 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]
Stock Options [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Antidilutive securities excluded from computation of earnings per share |  |  |  |  |  |  |  |  |  |  |  |  | 1,000 |  | 710,000 |  | 335,000 |
[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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