INTANGIBLE ASSETS (Tables)

3 Months Ended

Mar. 31, 2020

INTANGIBLE ASSETS.

Schedule of the cost basis, accumulated amortization and net book value of intangible assets

	March 31, 2020									December 31, 2019
									Remaining									Remaining
									Weighted									Weighted
					Accumulated		Net		Average					Accumulated		Net		Average
	Cost		Accumulated		Impairment		Book		Amortization			Accumulated		Impairment		Book		Amortization
	Basis		Amortization		Charges		Value		Period	Cost		Amortization		Charges		Value		Period
Intangible assets:
Noncompete agreements	$	170	$	(90)	$	—	$	80	2.8	$	170	$	(83)	$	—	$	87	3.1
Customer relationships		15,979		(6,750)		(7,592)		1,637	5.6		15,979		(6,674)		(7,592)		1,713	5.8
Trade names		9,099		(6,080)		—		3,019	7.5		9,099		(5,980)		—		3,119	7.8
Intangible assets	$	25,248	$	(12,920)	$	(7,592)	$	4,736	6.3	$	25,248	$	(12,737)	$	(7,592)	$	4,919	6.5

Schedule of estimated future amortization expense

As of March 31, 2020, estimated future amortization expense is as follows:

2020	$	550
2021		733
2022		725
2023		664
2024		661
2025 and thereafter		1,403
Total	$	4,736