SEGMENTS (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) Segment	Sep. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
SEGMENTS [Abstract]
Number of reportable segments | Segment			3
Summary financial information by reporting segment [Abstract]
Revenues	$ 78,792	$ 72,594	$ 211,303	$ 199,427
Percentage of Total Revenue	100.00%	100.00%	100.00%	100.00%
Operating Income (Loss)	$ 3,840	$ 2,143	$ 3,655	$ (4,814)
Total Assets	205,816		205,816		$ 194,763
Transportation and Skilled Trades [Member]
Summary financial information by reporting segment [Abstract]
Revenues	56,828	52,652	148,799	141,006
Healthcare and Other Professions [Member]
Summary financial information by reporting segment [Abstract]
Revenues	21,964	19,942	62,504	58,421
Reportable Segments [Member] | Transportation and Skilled Trades [Member]
Summary financial information by reporting segment [Abstract]
Revenues	$ 56,828	$ 52,652	$ 148,799	$ 141,005
Percentage of Total Revenue	72.10%	72.50%	70.40%	70.70%
Operating Income (Loss)	$ 9,138	$ 6,752	$ 18,848	$ 11,051
Total Assets	138,123		138,123		121,611
Reportable Segments [Member] | Healthcare and Other Professions [Member]
Summary financial information by reporting segment [Abstract]
Revenues	$ 21,964	$ 19,942	$ 62,504	$ 58,422
Percentage of Total Revenue	27.90%	27.50%	29.60%	29.30%
Operating Income (Loss)	$ 1,654	$ 1,403	$ 6,388	$ 4,214
Total Assets	34,628		34,628		27,945
Corporate [Member]
Summary financial information by reporting segment [Abstract]
Revenues	0	0	0	0
Operating Income (Loss)	(6,952)	$ (6,012)	(21,581)	$ (20,079)
Total Assets	$ 33,065		$ 33,065		$ 45,207