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Note 12 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Balances	$ 45,125,346		$ 45,125,346
Balances	$ 39,982,142		$ 37,817,086
Exercise of stock options (in shares)	66,746	51,963	135,622	63,537
Exercise of stock options	$ 84,969		$ 104,837
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration	(609,308)		(1,321,541)
Stock-based compensation (note 13)	313,265		631,085
Net income	5,241,484	$ 4,070,786	7,687,975	$ 8,509,024
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.	(12,549)		(25,048)
Other comprehensive income (loss)	125,343	$ 106,631	230,952	$ 990,151
Common Stock [Member]
Balances	$ 15,125,326		$ 15,125,326
Balances (in shares)	10,504,152		10,461,574
Balances	$ 14,783,156		$ 14,460,500
Exercise of stock options (in shares)	66,746		135,622
Exercise of stock options	$ 342,170		$ 664,826
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares)	(18,497)		(44,795)
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
Stock-based compensation (note 13)
Net income
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.
Other comprehensive income (loss)
Balances (in shares)	10,552,401		10,552,401
Additional Paid-in Capital [Member]
Balances	$ 1,607,476		$ 1,607,476
Balances	2,160,720		2,857,921
Exercise of stock options	(257,201)		(559,989)
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration	(609,308)		(1,321,541)
Stock-based compensation (note 13)	313,265		631,085
Net income
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.
Other comprehensive income (loss)
Retained Earnings [Member]
Balances	28,062,438		28,062,438
Balances	22,833,503		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	5,241,484		7,687,975
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.	(12,549)		(25,048)
Other comprehensive income (loss)
AOCI Attributable to Parent [Member]
Balances	330,106		330,106
Balances	204,763		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
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.
Other comprehensive income (loss)	$ 125,343		$ 230,952

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