Note 13 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018		Jun. 30, 2017
Balances	$ 65,409			$ 60,211	[1]
Exercise of stock options (in shares)	16,153	66,746		28,716		135,622
Exercise of stock options	$ 32			$ 39
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration	(141)			(288)
Stock-based compensation (note 14)	615			1,193
Net income	3,608	$ 5,242	[2],[3]	7,352		$ 7,686	[2],[3]
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.				(64)
Other comprehensive loss	(260)	$ 126	[2]	(243)		$ 231	[2]
Balances	$ 69,263			69,263
Impact of Adoption of ASU 2014-09				1,063
Balances				$ 61,274
Common Stock [Member]
Balances (in shares)	10,592,115			10,583,879
Balances	$ 15,426			$ 15,368
Exercise of stock options (in shares)	16,153			28,716
Exercise of stock options	$ 122			$ 180
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration (in shares)	(4,902)			(9,229)
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
Stock-based compensation (note 14)
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.
Other comprehensive loss
Balances (in shares)	10,603,366			10,603,366
Balances	$ 15,548			$ 15,548
Impact of Adoption of ASU 2014-09
Balances				15,368
Additional Paid-in Capital [Member]
Balances	2,547			2,167
Exercise of stock options	(90)			(141)
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration	(141)			(288)
Stock-based compensation (note 14)	615			1,193
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.
Other comprehensive loss
Balances	2,931			2,931
Impact of Adoption of ASU 2014-09
Balances				2,167
Retained Earnings [Member]
Balances	47,419			42,676
Exercise of stock options
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
Stock-based compensation (note 14)
Net income	3,608			7,352
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.				(64)
Other comprehensive loss
Balances	51,027			51,027
Impact of Adoption of ASU 2014-09				1,063
Balances				43,739
AOCI Attributable to Parent [Member]
Balances	17
Exercise of stock options
Shares deducted from exercise of stock options for payment of witholding taxes and exercise consideration
Stock-based compensation (note 14)
Accretion of redeemable non-controlling interest in Ting Virginia, LLC.
Other comprehensive loss	(260)			(243)
Balances	$ (243)			(243)
Impact of Adoption of ASU 2014-09
Balances

[1] The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.

[2] The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.

[3] The Company has initially applied ASC 2014-09 (Topic 606) using the modified retrospective method. Under this method, the comparative information is not restated.