Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ (455)	$ 587
Adjustments to reconcile net income to cash provided by operating activities:
Depreciation and amortization	2,225	2,537
Loss from sale of property and equipment	52	4
Provision for obsolete inventories	1,824	1,626
Deferred income tax	(145)	(234)
Stock-based compensation	8
Changes in operating assets and liabilities
Accounts receivable	31,027	28,466
Inventories	10,557	(129)
Value added tax receivable	1,406	1,895
Other receivables and prepaid expenses	3,975	832
Advances on inventory purchases	490	(1,175)
Amounts due from related parties	103	(165)
Accounts payable	(26,505)	(17,944)
Accounts payable and other payables- related parties	(741)	(653)
Other payables and accrued liabilities	(9,565)	(5,182)
Value added and other taxes payable	(2,788)	(1,988)
Income tax payable	(327)	(670)
Net cash provided by operating activities	11,141	7,807
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property and equipment	(2,131)	(2,552)
Net cash used in investing activities	(2,131)	(2,552)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from bank loans	6,029	17,346
Repayment of bank loans	(7,408)	(14,780)
Repayment of loans from related party	3,488
Advances to related party	(2,163)	(7,692)
Net cash used in financing activities	(54)	(5,126)
EFFECT OF EXCHANGE RATE CHANGES ON CASH	1,908	2,172
NET INCREASE IN CASH AND CASH EQUIVALENTS	10,864	2,301
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	47,012	62,876
CASH AND CASH EQUIVALENTS AT END OF PERIOD	57,876	65,177
Cash paid during the period for:
Interest	363	564
Income taxes	$ 126	$ 1,938