STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
		Dec. 31, 2020	Dec. 31, 2023	Dec. 31, 2022	May 24, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for issuance to participants			150,307		250,000
Granted, number of share of restricted stock (units)			95,196
Total			$ 1,469	$ 2,318
Coit Staffing, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total		$ 16		$ 108
Restricted stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)			115,924	65,494
Total			$ 1,453	$ 2,210
Unrecognized Expense			$ 1,346	$ 1,519
Weighted Average Period in Years			10 months 24 days	9 months 18 days
Restricted stock units, type 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)	[1],[2]		7,736
Restricted stock units, type 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)	[1],[2]		21,105
Restricted stock units, time
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)	[2]		66,355
Non employee director restricted stock unit
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)			20,728	10,084
Non-option equity instruments, outstanding, number			264,144
Restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total			$ 16	$ 108
Unrecognized Expense			$ 0	$ 16
Weighted Average Period in Years			0 days	2 months 12 days
Restricted stock | Coit Staffing, Inc.
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock granted during period, shares, acquisitions			52,226
Restricted stock units, type 1 and 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)			28,841	5,250
Restricted stock units, type 1 and 2 | Global Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)			65,105
Restricted Stock Units (RSUs), Time-based, Not subject to performance conditions
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)			1,250
Second Anniversary | Restricted stock units, type 2
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, number of share of restricted stock (units)				50,160

[1] The performance conditions with respect to restricted stock units may be satisfied as follows:  (a)For grants to Corporate office employees subject to 2023 performance conditions, 100% of the restricted stock units may be earned on the basis of performance as measured by a “group adjusted EBITDA”.

[2] To the extent restricted stock units are earned, such restricted stock units will vest on the basis of service as follows: (a)33% and 66.6% for Type 1 and Type 2, respectively, of the restricted stock units will vest on the first anniversary of the grant date; (b)33% and 16.7% for Type 1 and Type 2, respectively, of the restricted stock units will vest on the second anniversary of the grant date; and (c)34% and 16.7% for Type 1 and Type 2, respectively, of the restricted stock units will vest on the third anniversary of the grant date; provided that, in each case, the employee remains employed by the Company from the grant date through the applicable service vesting date.