BUSINESS COMBINATIONS (Details) - USD ($) $ in Thousands		6 Months Ended		9 Months Ended	12 Months Ended
	Feb. 01, 2017	Jun. 30, 2018	Jun. 30, 2017	Dec. 31, 2017	Dec. 31, 2017	Sep. 30, 2017	Mar. 31, 2017
Business Acquisition [Line Items]
Cash paid in acquisition			$ 16,449
Fair value of the contingent consideration			$ 2,534
Assets acquired and liabilities assumed:
Goodwill				$ 4,993	$ 4,993
Weighted average amortization period		7 years			8 years 9 months 18 days
Noncompete agreements
Assets acquired and liabilities assumed:
Weighted average amortization period		4 years 7 months 6 days			5 years 1 month 6 days
Customer relationships
Assets acquired and liabilities assumed:
Weighted average amortization period		7 years 6 months			8 years
Trade names
Assets acquired and liabilities assumed:
Weighted average amortization period		10 years			10 years 6 months
Minimum
Assets acquired and liabilities assumed:
Weighted average amortization period		5 years
Maximum
Assets acquired and liabilities assumed:
Weighted average amortization period		10 years
Red Wolf
Business Acquisition [Line Items]
Cash paid in acquisition	$ 16,449
Fair value of the contingent consideration	2,534
Consideration recorded in accrued liabilities						$ 1,394
Consideration recorded in other long term liabilities		$ 1,140
Annual earn out payments	4,950
Discount rate		15.00%
Assets acquired and liabilities assumed:
Cash and cash equivalents							$ 63
Adjustments-Cash and cash equivalents				(63)
Receivables				2,700	$ 2,700		2,796
Adjustments-Receivables				(96)
Inventories				5,177	5,177		4,998
Adjustments-Inventories				179
Property and equipment				462	462		462
Goodwill				4,993	4,993		5,568
Adjustments-Goodwill				(575)
Accounts payable				(1,352)	(1,352)		(1,354)
Adjustments-Accounts payable				2
Accrued expenses				(876)	(876)		(809)
Adjustments-Accrued expenses				(67)
Liabilities assumed				(5,391)	(5,391)		(5,391)
Total purchase price				18,983	18,983		19,603
Adjustments-Total purchase price				(620)
Weighted average amortization period		9 years 4 months 24 days
Red Wolf | Noncompete agreements
Assets acquired and liabilities assumed:
Intangible assets, net				170	170		170
Weighted average amortization period		6 years
Red Wolf | Customer relationships
Assets acquired and liabilities assumed:
Intangible assets, net				12,000	12,000		12,000
Weighted average amortization period		9 years
Red Wolf | Trade names
Assets acquired and liabilities assumed:
Intangible assets, net				$ 1,100	$ 1,100		$ 1,100
Weighted average amortization period		14 years
Red Wolf | Minimum
Business Acquisition [Line Items]
Fair value of the contingent consideration	0
Red Wolf | Maximum
Business Acquisition [Line Items]
Fair value of the contingent consideration	$ 9,900