Note 14 - Stockholders' Equity - Stockholders' Equity Transactions (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Balances	$ 94,194
Exercise of stock options (in shares)	25,013	29,043
Exercise of stock options	$ 17
Shares deducted from exercise of stock options for payment of withholding taxes and exercise consideration	(182)
Acquisition of Cedar Holdings Group	2,000
Repurchase and retirement of shares	(3,117)
Stock-based compensation	801
Net income	2,834	$ 2,799	[1]
Other comprehensive income (loss)	(1,191)	$ 610
Balances	$ 95,356
Common Stock [Member]
Balances (in shares)	10,585,159
Balances	$ 16,633
Exercise of stock options (in shares)	25,013
Exercise of stock options	$ 236
Shares deducted from exercise of stock options for payment of withholding taxes and exercise consideration (in shares)	(13,034)
Shares deducted from exercise of stock options for payment of withholding taxes and exercise consideration
Acquisition of Cedar Holdings Group (in shares)	32,374
Acquisition of Cedar Holdings Group	$ 2,000
Repurchase and retirement of shares (in shares)	(66,738)
Repurchase and retirement of shares	$ (118)
Stock-based compensation
Other comprehensive income (loss)
Balances (in shares)	10,562,774
Balances	$ 18,751
Additional Paid-in Capital [Member]
Balances	880
Exercise of stock options	(219)
Shares deducted from exercise of stock options for payment of withholding taxes and exercise consideration	(182)
Acquisition of Cedar Holdings Group
Repurchase and retirement of shares	(1,280)
Stock-based compensation	801
Other comprehensive income (loss)
Balances
Retained Earnings [Member]
Balances	76,208
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes and exercise consideration
Acquisition of Cedar Holdings Group
Repurchase and retirement of shares	(1,719)
Stock-based compensation
Net income	2,834
Other comprehensive income (loss)
Balances	77,323
AOCI Attributable to Parent [Member]
Balances	473
Exercise of stock options
Shares deducted from exercise of stock options for payment of withholding taxes and exercise consideration
Acquisition of Cedar Holdings Group
Repurchase and retirement of shares
Stock-based compensation
Other comprehensive income (loss)	(1,191)
Balances	$ (718)

[1] The Company has initially applied ASC 2014-09 (Topic 606) on January 1, 2018 and ASC 2016-02 (Topic 842) on January 1, 2019. Both accounting standards were adopted using the modified retrospective method, under this method the comparative periods were not restated.