Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Balance (in shares) at Dec. 31, 2018	18,547,406
Balance at Dec. 31, 2018	$ 19	$ 113,008	$ (98,395)	$ 14,632
Stock based compensation	$ 0	3,043	0	3,043
Shares issued in acquisitions (in shares)	1,334,219
Shares issued in acquisitions	$ 1	23,931	0	23,932
Stock option exercises (in shares)	697,010
Stock option exercises	$ 1	1,180	0	1,181
Stock issued – on vested RSUs (in shares)	125,817
Stock issued – on vested RSUs	$ 0	0	0	0
Warrant exercises (in shares)	121,000
Warrant exercises	$ 0	2,323	0	2,323
Net income (loss)	$ 0	0	(1,657)	(1,657)
Balance (in shares) at Dec. 31, 2019	20,825,452
Balance at Dec. 31, 2019	$ 21	143,485	(100,052)	43,454
Stock based compensation	$ 0	5,981	0	5,981
Shares issued in acquisitions (in shares)	611,683
Shares issued in acquisitions	$ 0	17,916	0	17,916
Stock option exercises (in shares)	777,496
Stock option exercises	$ 1	1,471	0	1,472
Stock issued – on vested RSUs (in shares)	208,858
Stock issued – on vested RSUs	$ 0	0	0	0
Warrant exercises (in shares)	8,500
Warrant exercises	$ 0	150	0	150
Net income (loss)	0	0	2,667	2,667
Stock issued as 2019 bonus payout	$ 0	314	0	314
Sale of common stock, net of costs (in shares)	7,856,012
Sale of common stock, net of costs	$ 8	100,113	0	100,121
Common stock issued for services (in shares)	3,175
Common stock issued for services	$ 0	60	0	60
Cashless exercises of warrants (in shares)	2,747,970
Cashless exercises of warrants	$ 3	33,108	0	33,111
Balance (in shares) at Dec. 31, 2020	33,039,146
Balance at Dec. 31, 2020	$ 33	$ 302,598	$ (97,385)	$ 205,246