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Note 12 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2017 | Sep. 30, 2016
Balances | $ 45,125,346 |  | $ 37,817,086 | $ 37,817,086 |
Exercise of stock options (in shares) | 30,051 | 31,065 |  | 165,673 | 94,602
Exercise of stock options | $ 68,066 |  | 172,903 |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration | (116,956) |  | (1,438,497) |  |
Stock-based compensation (note 13) | 202,902 |  | 833,987 |  |
Net income for the period | 3,439,266 | $ 4,741,279 | 11,127,241 | $ 11,127,241 | $ 13,250,303
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. | (12,600) |  | (37,648) |  |
Other comprehensive income (loss) | (8,071) | $ 73,091 | 222,881 | 222,881 | $ 1,063,242
Balances | $ 48,697,953 |  | $ 48,697,953 | $ 48,697,953 |
Common Stock [Member] |  |  |  |  |
Balances (in shares) | 10,552,401 |  | 10,461,574 |  |
Balances | $ 15,125,326 |  | $ 14,460,500 |  |
Exercise of stock options (in shares) | 30,051 |  | 165,673 |  |
Exercise of stock options | $ 159,307 |  | $ 824,133 |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares) | (4,903) |  | (49,698) |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |  |
Stock-based compensation (note 13) |  |  |  |  |
Net income for the period |  |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  |
Balances (in shares) | 10,577,549 |  | 10,577,549 | 10,577,549 |
Balances | $ 15,284,633 |  | $ 15,284,633 | $ 15,284,633 |
Additional Paid-in Capital [Member] |  |  |  |  |
Balances | 1,607,476 |  | 2,857,921 |  |
Exercise of stock options | (91,241) |  | (651,230) |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration | (116,956) |  | (1,438,497) |  |
Stock-based compensation (note 13) | 202,902 |  | 833,987 |  |
Net income for the period |  |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |  |
Other comprehensive income (loss) |  |  |  |  |
Balances | 1,602,181 |  | 1,602,181 | 1,602,181 |
Retained Earnings [Member] |  |  |  |  |
Balances | 28,062,438 |  | 20,399,511 |  |
Exercise of stock options |  |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |  |
Stock-based compensation (note 13) |  |  |  |  |
Net income for the period | 3,439,266 |  | 11,127,241 |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. | (12,600) |  | (37,648) |  |
Other comprehensive income (loss) |  |  |  |  |
Balances | 31,489,104 |  | 31,489,104 | 31,489,104 |
AOCI Attributable to Parent [Member] |  |  |  |  |
Balances | 330,106 |  | 99,154 |  |
Exercise of stock options |  |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |  |
Stock-based compensation (note 13) |  |  |  |  |
Net income for the period |  |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |  |
Other comprehensive income (loss) | (8,071) |  | 222,881 |  |
Balances | $ 322,035 |  | $ 322,035 | $ 322,035 |

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