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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (DEFICIT) (UNAUDITED) - USD ($) | Common Stock [Member] | Common Stock [Member] As Previously Reported [Member] | Additional Paid-in Capital [Member] | Additional Paid-in Capital [Member] As Previously Reported [Member] | Retained Earnings (Accumulated Deficit) [Member] | Retained Earnings (Accumulated Deficit) [Member] As Previously Reported [Member] | Retained Earnings (Accumulated Deficit) [Member] Restatement Adjustments [Member] | Accumulated Other Comprehensive Loss [Member] | Accumulated Other Comprehensive Loss [Member] As Previously Reported [Member] | Total | As Previously Reported [Member] | Restatement Adjustments [Member]
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Balance, beginning at Dec. 31, 2017 | $ 8,864 | $ 8,864 | $ 53,770,617 | $ 53,770,617 | $ (67,049,783) | $ 20,548,652 | $ (87,598,435) | $ (14,800) | $ (14,800) | $ (13,285,102) | $ 74,313,333 | $ (87,598,435)
Balance, beginning (in shares) at Dec. 31, 2017 | 8,864,319 | 8,864,319 |  |  |  |  |  |  |  |  |  |
Net loss |  |  |  |  | (1,442,907) |  |  |  |  | (1,442,907) | 1,256,765 | (2,699,672)
Change in unrealized loss from interest rate swap |  |  |  |  |  |  |  | (5,800) |  | (5,800) |  |
Common stock issued as employee compensation | $ 5 |  | (48,006) |  |  |  |  |  |  | (48,001) |  |
Common stock issued as employee compensation (in shares) | 5,130 |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense | $ 55 |  | 303,885 |  |  |  |  |  |  | 303,940 |  |
Stock based compensation expense (in shares) | 54,396 |  |  |  |  |  |  |  |  |  |  |
Balance, ending at Mar. 31, 2018 | $ 8,924 |  | 54,026,496 |  | (68,492,690) |  |  | $ (20,600) |  | (14,477,870) |  |
Balance, ending (in shares) at Mar. 31, 2018 | 8,923,845 |  |  |  |  |  |  |  |  |  |  |
Balance, beginning at Dec. 31, 2018 | $ 11,718 | $ 11,718 | 70,651,413 | $ 70,651,413 | (74,596,536) | $ 22,760,215 | $ (97,356,751) |  |  | $ (3,933,405) | 93,423,346 | (97,356,751)
Balance, beginning (in shares) at Dec. 31, 2018 | 11,718,246 | 11,718,246 |  |  |  |  |  |  |  | 11,718,246 |  |
Net loss |  |  |  |  | (934,716) |  |  |  |  | $ (934,716) | 1,658,598 | $ (2,593,314)
Costs related to stock offering |  |  | (64,371) |  |  |  |  |  |  | (64,371) |  |
Common stock issued upon exercise of options (in shares) | 521 |  |  |  |  |  |  |  |  |  |  |
Stock based compensation expense | $ 18 |  | 330,769 |  |  |  |  |  |  | 330,787 |  |
Stock based compensation expense (in shares) | 17,619 |  |  |  |  |  |  |  |  |  |  |
Balance, ending at Mar. 31, 2019 | $ 11,736 |  | $ 70,917,811 |  | $ (75,531,252) |  |  |  |  | $ (4,601,705) | $ 95,348,360 |
Balance, ending (in shares) at Mar. 31, 2019 | 11,736,386 |  |  |  |  |  |  |  |  | 11,736,386 |  |

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