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Note 13 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Common Stock [Member] |  |  |  |
Balances (in shares) | 10,422,453 |  | 10,685,599 |
Balances | $ 14,295,907 |  | $ 14,530,633 |
Exercise of stock options (in shares) | 31,065 |  | 94,602 |
Exercise of stock options | $ 105,419 |  | $ 291,332 |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares) | (5,235) |  | (23,502) |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Income tax effect related to stock options exercised |  |  |  |
Stock-based compensation (note 14) |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |
Other comprehensive income (loss) |  |  |  |
Balances (in shares) | 10,448,283 |  | 10,448,283 |
Balances | $ 14,401,326 |  | $ 14,401,326 |
Exercise of stock options (in shares) | 31,065 |  | 94,602 |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares) | (5,235) |  | (23,502) |
Repurchase and retirement of shares (note 13) (in shares) |  |  | (308,416) |
Repurchase and retirement of shares (note 13) |  |  | $ (420,639) |
Additional Paid-in Capital [Member] |  |  |  |
Balances | $ 2,234,541 |  | 8,526,395 |
Exercise of stock options | (57,043) |  | (183,660) |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration | (76,537) |  | (318,770) |
Income tax effect related to stock options exercised | 268,565 |  | 714,764 |
Stock-based compensation (note 14) | 195,439 |  | 585,854 |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |
Other comprehensive income (loss) |  |  |  |
Balances | 2,564,965 |  | 2,564,965 |
Repurchase and retirement of shares (note 13) |  |  | (6,759,618) |
Retained Earnings [Member] |  |  |  |
Balances | 12,866,227 |  | 4,381,849 |
Exercise of stock options |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Income tax effect related to stock options exercised |  |  |  |
Stock-based compensation (note 14) |  |  |  |
Net income for the period | 4,741,279 |  | 13,250,303 |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. | (12,398) |  | (37,044) |
Other comprehensive income (loss) |  |  |  |
Balances | 17,595,108 |  | 17,595,108 |
Repurchase and retirement of shares (note 13) |  |  |  |
AOCI Attributable to Parent [Member] |  |  |  |
Balances | (119,301) |  | (1,109,452) |
Exercise of stock options |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Income tax effect related to stock options exercised |  |  |  |
Stock-based compensation (note 14) |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |
Other comprehensive income (loss) | 73,091 |  | 1,063,242 |
Balances | (46,210) |  | (46,210) |
Repurchase and retirement of shares (note 13) |  |  |  |
Balances | $ 29,277,374 |  | $ 26,329,425 |
Exercise of stock options (in shares) | 31,065 | 41,404 | 94,602 | 229,057
Exercise of stock options | $ 48,376 |  | $ 107,672 |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration | (76,537) |  | (318,770) |
Income tax effect related to stock options exercised | 268,565 |  | 714,764 |
Stock-based compensation (note 14) | 195,439 |  | 585,854 |
Net income for the period | 4,741,279 | $ 3,159,457 | 13,250,303 | $ 8,278,395
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. | (12,398) |  | (37,044) |
Other comprehensive income (loss) | 73,091 | $ (360,006) | 1,063,242 | $ (570,888)
Balances | $ 34,515,189 |  | $ 34,515,189 |
Exercise of stock options (in shares) | 31,065 | 41,404 | 94,602 | 229,057
Repurchase and retirement of shares (note 13) |  |  | $ (7,180,257) |

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