Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
OPERATING ACTIVITIES
Net income (loss)	$ 1,379	$ 21,400
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	3,627	2,062
Deferred income taxes	3,471	(13,483)
Provision for doubtful accounts receivable	658	904
Stock-based compensation	1,102	4,523
Gain on sale disposal of property and equipment		(18)
Gain on extinguishment of liability		(164)
Impairment of goodwill	400
Impairment of assets		2,742
Equity in the net loss of equity method investees	4,830	3,430
Change in assets and liabilities, net of effect of acquisition:
Trade accounts receivable	(12,041)	7,817
Inventory	(6,739)	(4,764)
Prepaid expenses	(124)	219
Other current assets and other assets	1,137	2,726
Trade accounts payable, accrued expenses and other current liabilities	5,506	(7,846)
Contract liability	12,271	547
Due to IDT Corporation	147	20
Income taxes payable	128	(741)
Net cash provided by operating activities	15,752	19,374
INVESTING ACTIVITIES
Capital expenditures	(404)	(584)
Investments in notes receivable	(214)
Proceeds from disposal of property		62
Payment for acquisition of license in Japan		(745)
Cash transferred to Atid 613		(209)
Payment for acquisition, net of cash acquired	(2,044)	(250)
Repayment of notes receivable	124	94
Investments in equity method investees	(3,235)	(1,306)
Net cash used in investing activities	(5,773)	(2,938)
FINANCING ACTIVITIES
Dividends paid	(9,595)	(9,256)
Purchases of Class B common stock	(5,584)
Repayment of short-term debt-Lumo Energia	(2,260)
Repayment of notes payable	(45)	(10)
Proceeds from exercise of stock options	1,407
Proceeds from sales of Class B common stock and warrants		6,000
Proceeds from Other Debt	921
Repurchases of Class B common stock from employees	(467)	(889)
Net cash used in financing activities	(15,623)	(4,155)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	1	(11)
Net (decrease) increase in cash, cash equivalents and restricted cash	(5,643)	12,270
Cash, cash equivalents and restricted cash at beginning of year	44,197	31,927
Cash, cash equivalents and restricted cash at end of year	38,554	44,197
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments made for interest	529	400
Cash payments made for income taxes	702	1,771
SUPPLEMENTAL SCHEDULE OF NON-CASH FINANCING AND INVESTING ACTIVITIES
Class B common stock issued for GRE deferred stock units
Purchase of equity of subsidiary (Note 12)		4,140
Carrying value of assets contributed to New Atid (Note 2)		$ 1,000