BUSINESS COMBINATION (Details) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended	12 Months Ended
	Mar. 09, 2020	Jun. 04, 2019	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Common stock, par value (in dollars per share)			$ 0.00025	$ 0.00025
Common stock (in dollars per share)		$ 40.76
Acquisition related costs			$ 737
Escrow deposit period		20 months
Liabilities
Goodwill			$ 15,179	$ 13,773	$ 0
Discontinued Operations, Disposed of by Sale
Liabilities
Divestiture purchase price				25,000
Attributable to deferred revenue				12,410
Allocated purchase price				12,590
Telos
Business Acquisition [Line Items]
Purchase of shares and membership interests in cash	$ 1,750
Cash acquired	$ 81
Purchase of shares and membership interests in common stock (in shares)	36,628
Common stock, par value (in dollars per share)	$ 0.00025
Common stock (in dollars per share)	$ 47.78
Acquisition related costs	$ 20
Preliminary fair value of estimated total acquisition consideration	3,500
Assets
Cash	81
Accounts receivable-trade	215
Property and equipment	10
Intangible assets	1,160
Total assets	1,466
Liabilities
Accounts payable and accrued liabilities	60
Total liabilities	60
Less: Net assets	1,406
Goodwill	2,094
Fair value of identifiable intangible assets	1,160
Telos | Trademarks and Trade Names
Liabilities
Indefinite-lived intangible assets acquired	210
Telos | Customer Relationships
Liabilities
Finite-lived intangible assets acquired	$ 910
Remaining Economic Useful Life (in years)	10 years
Telos | Noncompete Agreements
Liabilities
Finite-lived intangible assets acquired	$ 40
Remaining Economic Useful Life (in years)	5 years
Vilex and Orthex
Business Acquisition [Line Items]
Purchase of shares and membership interests in cash		$ 50,000
Purchase of shares and membership interests in common stock (in shares)		245,352
Common stock, par value (in dollars per share)		$ 0.00025
Escrow deposit		$ 3,000
Preliminary fair value of estimated total acquisition consideration		60,184
Assets
Cash		348
Accounts receivable-trade		2,088
Inventories		3,652
Prepaid expenses and other current assets		12
Property and equipment		7,540
Intangible assets		31,180
Operating lease right-of-use asset		323
Total assets		45,143
Liabilities
Accounts payable and accrued liabilities		563
Operating lease liabilities		323
Deferred tax liability		1,175
Other long-term liabilities		68
Total liabilities		2,129
Less: Net assets		43,014
Goodwill		17,170
Fair value of identifiable intangible assets		31,180
Pro forma net revenue				15,830
Pro forma net loss				$ (3,491)
Vilex and Orthex | Trademarks and Trade Names
Liabilities
Indefinite-lived intangible assets acquired		4,610
Vilex and Orthex | Patents
Liabilities
Finite-lived intangible assets acquired		$ 22,390
Remaining Economic Useful Life (in years)		15 years
Vilex and Orthex | Developed Technology Rights
Liabilities
Finite-lived intangible assets acquired		$ 1,550
Remaining Economic Useful Life (in years)		10 years
Vilex and Orthex | Customer Relationships
Liabilities
Finite-lived intangible assets acquired		$ 2,570
Remaining Economic Useful Life (in years)		12 years
Vilex and Orthex | Noncompete Agreements
Liabilities
Finite-lived intangible assets acquired		$ 60
Remaining Economic Useful Life (in years)		5 years