CONSOLIDATED STATEMENTS OF CASH FLOWS € in Thousands, SFr in Thousands, $ in Thousands, $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income, after equity in losses from unconsolidated affiliates	$ (1,731)	$ 5,850	$ 9,456
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	4,916	4,595	4,754
Non-cash impact of operating leases	1,565
Deferred income tax (benefit) expense	(1,805)	(2,255)	8,864
Stock-based compensation	4,968	5,227	2,745
Equity in losses of unconsolidated affiliates	594	72	0
Amortization of debt discount and issuance costs	1,842	0	0
Accretion of non-controlling interest	14	0	0
Unrealized foreign currency transaction loss on purchase consideration payable	159	0	0
Other losses (gains)	387	8	(46)
Changes in operating assets and liabilities (net of effect of acquisitions):
Accounts receivable	3,796	(1,076)	5,243
Inventories	918	6,046	(13,834)
Due from related parties	0	1	99
Lease receivable, current	(846)	(920)	(1,244)
Other current assets	(394)	(505)	(474)
Accounts payable	(1,686)	(2,020)	3,143
Due to related parties	(226)	(1,477)	250
Accrued liabilities and other	(5,883)	6,146	(1,380)
Lease receivable, non-current	(2,283)	(2,294)	(4,782)
Other non-current assets	(57)	(871)	(984)
Deferred revenue and other	(952)	(3,240)	(1,401)
Net cash provided by operating activities	3,296	13,287	10,409
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in subsidiary, net of cash acquired	(622)	0	0
Cash acquired from acquisition of CVM	927	0	0
Acquisition of intangible asset	0	(2,750)	0
Investments in unconsolidated affiliates	0	(8,091)	0
Purchase of minority interest	0	0	(13,757)
Real estate asset acquisition	(1,184)	0	0
Purchases of property and equipment	(1,044)	(1,358)	(3,469)
Proceeds from disposition of property and equipment	0	25	57
Net cash used in investing activities	(1,923)	(12,174)	(17,169)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock	1,829	4,034	2,452
Repurchase of common stock	(3,447)	(1,271)	(1,076)
Distributions to non-controlling interest members	0	(126)	(965)
Convertible debt proceeds	86,250	0	0
Proceeds from line of credit borrowings	6,750	3,000	40,307
Repayments of line of credit borrowings	(12,750)	(3,000)	(34,979)
Repayments of other debt	(1,191)	(10)	(68)
Payment of debt issuance costs	(3,177)	0	(120)
Net cash provided by financing activities	74,264	2,627	5,551
NET EFFECT OF EXCHANGE RATE CHANGES ON CASH	4	(10)	74
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	75,641	3,730	(1,135)
CASH AND CASH EQUIVALENTS, BEGINNING OF YEAR	13,389	9,659	10,794
CASH AND CASH EQUIVALENTS, END OF YEAR	89,030	13,389
NON-CASH TRANSACTIONS:
Transfers of equipment between inventory and property and equipment, net	827	1,449	1,637
Consideration payable for CVM Acquisition	14,420	0	0
Common stock issued as partial consideration of Cuattro acquisition transactions (See Note 3)	$ 0	$ 5,450	$ 0