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Note 13 - Stockholders' Equity Transactions (Details) - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2016 | Jun. 30, 2015 | Jun. 30, 2016 | Jun. 30, 2015
Common Stock [Member] |  |  |  |
Balances (in shares) | 10,594,733 |  | 10,685,599 |
Balances | $ 14,445,114 |  | $ 14,530,633 |
Exercise of stock options (in shares) | 51,963 |  | 63,537 |
Exercise of stock options | $ 137,176 |  | $ 185,913 |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares) | (14,545) |  | (18,267) |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Repurchase and retirement of shares (note 13) (in shares) | (209,698) |  | (308,416) |
Repurchase and retirement of shares (note 13) | $ (286,383) |  | $ (420,639) |
Income tax effect related to stock options exercised |  |  |  |
Stock-based compensation (note 14) |  |  |  |
Net income for the period |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |
Other comprehensive income (loss) |  |  |  |
Balances (in shares) | 10,422,453 |  | 10,422,453 |
Balances | $ 14,295,907 |  | $ 14,295,907 |
Exercise of stock options (in shares) | 51,963 |  | 63,537 |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares) | (14,545) |  | (18,267) |
Repurchase and retirement of shares (note 13) (in shares) | (209,698) |  | (308,416) |
Additional Paid-in Capital [Member] |  |  |  |
Balances | $ 6,676,096 |  | $ 8,526,395 |
Exercise of stock options | (97,438) |  | (126,617) |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration | (205,548) |  | (242,233) |
Repurchase and retirement of shares (note 13) | (4,713,595) |  | (6,759,618) |
Income tax effect related to stock options exercised | 384,839 |  | 446,199 |
Stock-based compensation (note 14) | 190,187 |  | 390,415 |
Net income for the period |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |
Other comprehensive income (loss) |  |  |  |
Balances | 2,234,541 |  | 2,234,541 |
Retained Earnings [Member] |  |  |  |
Balances | 8,807,789 |  | 4,381,849 |
Exercise of stock options |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Repurchase and retirement of shares (note 13) |  |  |  |
Income tax effect related to stock options exercised |  |  |  |
Stock-based compensation (note 14) |  |  |  |
Net income for the period | 4,070,786 |  | 8,509,024 |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. | (12,348) |  | (24,646) |
Other comprehensive income (loss) |  |  |  |
Balances | 12,866,227 |  | 12,866,227 |
AOCI Attributable to Parent [Member] |  |  |  |
Balances | (225,932) |  | (1,109,452) |
Exercise of stock options |  |  |  |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration |  |  |  |
Repurchase and retirement of shares (note 13) |  |  |  |
Income tax effect related to stock options exercised |  |  |  |
Stock-based compensation (note 14) |  |  |  |
Net income for the period |  |  |  |
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. |  |  |  |
Other comprehensive income (loss) | 106,631 |  | 990,151 |
Balances | (119,301) |  | (119,301) |
Balances | $ 29,703,067 |  | $ 26,329,425 |
Exercise of stock options (in shares) | 51,963 | 112,656 | 63,537 | 187,653
Exercise of stock options | $ 39,738 |  | $ 59,296 |
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration | (205,548) |  | (242,233) |
Repurchase and retirement of shares (note 13) | (4,999,978) |  | (7,180,257) |
Income tax effect related to stock options exercised | 384,839 |  | 446,199 |
Stock-based compensation (note 14) | 190,187 |  | 390,415 |
Net income for the period | 4,070,786 | $ 2,284,995 | 8,509,024 | $ 5,118,938
Accretion of redeemable non-controlling interest in Ting Virginia, LLC. | (12,348) |  | (24,646) |
Other comprehensive income (loss) | 106,631 | $ 333,909 | 990,151 | $ (210,883)
Balances | $ 29,277,374 |  | $ 29,277,374 |
Exercise of stock options (in shares) | 51,963 | 112,656 | 63,537 | 187,653

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