Redeemable Convertible Preferred Stock	3 Months Ended
Mar. 31, 2019
Temporary Equity Disclosure [Abstract]
Redeemable Convertible Preferred Stock	9. Redeemable Convertible Preferred Stock In conjunction with the issuance of 1,000,000 shares of Redeemable Convertible Preferred Stock, Series A in May 2012, warrants to purchase 325,000 shares of our common stock (the “Warrants”) were issued. The initial value allocated to the Warrants was recognized as a discount on the Series A Convertible Preferred Stock, with a corresponding charge to additional paid-in capital. The discount related to the Warrants is accreted to retained earnings through the scheduled redemption date of the redeemable Series A Convertible Preferred Stock. Discount accretion was less than $20,000 for both the three months ended March 31, 2019 and 2018. The Series A Convertible Preferred Stock accrues cumulative dividends at a rate of 6% per annum payable quarterly in cash or in shares of Common Stock, at the option of the Company, based on the then current liquidation market price value of the Series A Convertible Preferred Stock, which is currently $5.00 per share. Quarterly dividends not paid in cash or Common Stock accumulate without interest and must be fully paid before any dividend or other distribution can be paid on or declared and set apart for the holders of Common Stock or the conversion of the Series A Convertible Preferred Stock to Common Stock. At March 31, 2019 and December 31, 2018, the company had accrued but unpaid dividends totaling $0.08 million which is included in accounts payable and other accrued expenses in the condensed consolidated balance sheets. During the three months ended March 31, 2019 and 2018, the Company issued 85,559 and 50,799 shares of common stock as payment of dividends, respectively. On or after April 30, 2017, the holders of a majority of the outstanding shares of the Series A Convertible Preferred Stock may require the Company to redeem the Series A Convertible Preferred Stock at a redemption price equal to the lessor of (i) the liquidation preference per share (initially $5.00 per share, subject to adjustments for certain future equity transactions defined in the Securities Purchase Agreement) and (ii) the fair market value of the Series A Convertible Preferred Stock per share, as determined in good faith by the Company’s Board of Directors. As of March 31, 2019 and December 31, 2018, the redemption price per share was $5.00. If the holder of the Series A Convertible Preferred Stock exercise their right of redemption, the redemption price, plus any accrued and unpaid dividends, shall be payable in 36 equal monthly installments plus interest at an annual rate of 6%.

Redeemable Convertible Preferred Stock

3 Months Ended

Mar. 31, 2019

Temporary Equity Disclosure [Abstract]

9. Redeemable Convertible Preferred Stock

In conjunction with the issuance of 1,000,000 shares of Redeemable Convertible Preferred Stock, Series A in May 2012, warrants to purchase 325,000 shares of our common stock (the “Warrants”) were issued.

The initial value allocated to the Warrants was recognized as a discount on the Series A Convertible Preferred Stock, with a corresponding charge to additional paid-in capital. The discount related to the Warrants is accreted to retained earnings through the scheduled redemption date of the redeemable Series A Convertible Preferred Stock. Discount accretion was less than $20,000 for both the three months ended March 31, 2019 and 2018.

The Series A Convertible Preferred Stock accrues cumulative dividends at a rate of 6% per annum payable quarterly in cash or in shares of Common Stock, at the option of the Company, based on the then current liquidation market price value of the Series A Convertible Preferred Stock, which is currently $5.00 per share. Quarterly dividends not paid in cash or Common Stock accumulate without interest and must be fully paid before any dividend or other distribution can be paid on or declared and set apart for the holders of Common Stock or the conversion of the Series A Convertible Preferred Stock to Common Stock. At March 31, 2019 and December 31, 2018, the company had accrued but unpaid dividends totaling $0.08 million which is included in accounts payable and other accrued expenses in the condensed consolidated balance sheets. During the three months ended March 31, 2019 and 2018, the Company issued 85,559 and 50,799 shares of common stock as payment of dividends, respectively.

On or after April 30, 2017, the holders of a majority of the outstanding shares of the Series A Convertible Preferred Stock may require the Company to redeem the Series A Convertible Preferred Stock at a redemption price equal to the lessor of (i) the liquidation preference per share (initially $5.00 per share, subject to adjustments for certain future equity transactions defined in the Securities Purchase Agreement) and (ii) the fair market value of the Series A Convertible Preferred Stock per share, as determined in good faith by the Company’s Board of Directors. As of March 31, 2019 and December 31, 2018, the redemption price per share was $5.00. If the holder of the Series A Convertible Preferred Stock exercise their right of redemption, the redemption price, plus any accrued and unpaid dividends, shall be payable in 36 equal monthly installments plus interest at an annual rate of 6%.