ACQUISITIONS (Details) $ in Thousands		3 Months Ended			12 Months Ended
	Jan. 28, 2019 USD ($)	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($) item	Dec. 31, 2018 USD ($)
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Issuance of seller notes			$ 4,451
Goodwill			27,890		$ 2,399
2019 Acquisition Activity, prosthetic and orthotic business
Acquisitions
Notes payable to share holders in quarterly installments period	3 years
Acquisition-related costs			200
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Cash paid, net of cash acquired	$ 27,700		27,679
Issuance of seller notes	4,500		4,451
Additional consideration			345
Aggregate purchase price	$ 32,500		32,475
Accounts receivable, net			3,318
Inventories			1,466
Other assets			329
Accounts payable			(1,191)
Accrued expenses and other liabilities			(1,649)
Net assets acquired			4,585
Goodwill			27,890
2019 Acquisition Activity, prosthetic and orthotic business | Customer Relationships
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Other intangible assets, net			$ 1,963
Useful life			3 years
2019 Acquisition Activity, prosthetic and orthotic business | Non-compete agreements
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Other intangible assets, net			$ 349
Useful life			4 years 10 months 24 days
2019 Acquisition Activity, prosthetic and orthotic business | Forecast
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Additional consideration		$ 300
2018 Acquisition Activity, two O&P businesses
Acquisitions
Number of businesses acquired | item				2
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Cash paid, net of cash acquired				$ 1,978	1,978
Issuance of seller notes					1,120
Aggregate purchase price				3,100	3,098
Accounts receivable, net				256	256
Inventories				302	302
Other assets				90	90
Accounts payable				(59)	(59)
Accrued expenses and other liabilities				(364)	(364)
Net assets acquired				699	699
Goodwill					2,399
2018 Acquisition Activity, two O&P businesses | Customer Relationships
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Other intangible assets, net				260	$ 260
Useful life					4 years
2018 Acquisition Activity, two O&P businesses | Non-compete agreements
Aggregate purchase price of this acquisition was allocated on a preliminary basis
Other intangible assets, net				$ 214	$ 214
Useful life					4 years 7 months 6 days