Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Total
Common stock, number of shares, beginning of year (in shares) at Dec. 31, 2016		8,743,299
Stock option exercised (in shares)		60,000
Stock repurchased during year (in shares)	(25,311)
Common stock, number of shares, end of year (in shares) at Dec. 31, 2017		8,777,988
Common stock, amount, beginning of year at Dec. 31, 2016		$ 87
Stock option exercised		1
Common stock, amount, end of year at Dec. 31, 2017		88
Additional paid-in capital, beginning of year at Dec. 31, 2016		17,864
Dividends paid
Minority holdings acquired		(3,038)
Stock option exercised		(1)
Stock compensation expense		52
Additional paid-in capital, end of year at Dec. 31, 2017		14,877
Accumulated other comprehensive loss, beginning of year at Dec. 31, 2016		(163)
Minority holdings acquired		22
Foreign currency translation adjustment		(25)
Unrealized gain/loss on marketable securities		23
Accumulated other comprehensive loss, end of year at Dec. 31, 2017		(143)
Accumulated earnings, beginning of year at Dec. 31, 2016		4,257
Net income		374
Accumulated earnings (deficit), end of year at Dec. 31, 2017		4,631
Noncontrolling interest, beginning of year at Dec. 31, 2016		(3,016)
Minority holdings acquired		3,016
Net loss
Noncontrolling interest, end of year at Dec. 31, 2017
Total Intelligent Systems Corporation stockholders’ equity		19,453
Total stockholders’ equity		$ 19,453
Stock option exercised (in shares)		40,000
Stock repurchased during year (in shares)
Common stock, number of shares, end of year (in shares) at Dec. 31, 2018		8,817,988
Stock option exercised
Common stock, amount, end of year at Dec. 31, 2018		88
Dividends paid
Minority holdings acquired
Stock option exercised		111
Stock compensation expense		62
Additional paid-in capital, end of year at Dec. 31, 2018		15,050
Minority holdings acquired
Foreign currency translation adjustment		28
Unrealized gain/loss on marketable securities		23
Accumulated other comprehensive loss, end of year at Dec. 31, 2018		(92)
Net income		6,244
Accumulated earnings (deficit), end of year at Dec. 31, 2018		10,875
Minority holdings acquired
Net loss
Noncontrolling interest, end of year at Dec. 31, 2018
Total Intelligent Systems Corporation stockholders’ equity		25,921
Total stockholders’ equity		$ 25,921