An asset group classified as held for sale is reflected at the lower of its carrying amount or estimated fair value less cost to sell. If the carrying amount of the assets exceeds its estimated fair value, a loss is recognized. We recorded approximately $0.9 million of machinery held for sale within "Assets Held for Sale" as of March 31, 2021 and December 31, 2020. We are actively seeking a buyer and expect to complete the sale of the machinery by the third quarter of 2021. We recognized no impairment charges during the three months ended March 31, 2021 or 2020.


(in thousands)	March 31, 2021		December 31, 2020
Other current assets:
VAT refund receivable	$	4,194	$	4,391
Prepaid expenses	1,651		1,542
Indemnification receivable, net	1,638		921
Other	3,113		4,038
	$	10,596	$	10,892


(in thousands)	March 31, 2021		December 31, 2020
Accrued expenses and other current liabilities:
VAT payable	$	7,409	$	9,882
Contingent consideration	853		—
Payroll related including bonus	2,551		2,361
Accrued professional fees	3,144		1,750
Accrued third-party logistics fees	206		1,295
Liabilities associated with assets held for sale	20		226
Accrued taxes, state and income	243		211
Current portion of long-term debt	1,093		182
Other	3,917		3,665
	$	19,436	$	19,572

For certain product offerings such as premium, patented, child-resistant packaging, closed-system vaporization solutions and custom-branded retail products. We generally receive a deposit from the customer (generally 50% of the total order cost, but the amount can vary by customer contract), when an order is placed by a customer. We typically complete orders related to customer deposits within one to three months from the date of order, depending on the complexity of the customization and the size of the order. Changes in our customer deposits liability balance during the three months ended March 31, 2021 were as follows:


(in thousands)	Customer Deposits
Balance as of December 31, 2020	$	2,729
Increases due to deposits received, net of other adjustments	1,691
Revenue recognized	(1,154)
Balance as of March 31, 2021	$	3,266


(in thousands)	Foreign Currency Translation		Unrealized Loss on Derivative Instrument		Total
Balance at December 31, 2020	$	183	$	(154)	$	29
Other comprehensive income (loss)	(155)		204		49

Less: Other comprehensive (income) loss attributable to non-controlling interest	99		(130)		(31)
Balance at March 31, 2021	$	127	$	(80)	$	47


(in thousands)	Foreign Currency Translation		Unrealized Loss on Derivative Instrument		Total
Balance at December 31, 2019	$	(22)	$	(50)	$	(72)
Other comprehensive loss	(627)		(493)		(1,120)
Less: Other comprehensive loss attributable to non-controlling interest	477		376		853
Balance at March 31, 2020	$	(172)	$	(167)	$	(339)

We have four major vendors whose products accounted for an aggregate of approximately 42.9% our total net sales and 35.5% of our total purchases for the three months ended March 31, 2021, and an aggregate of approximately 47.9% of our total net sales and 37.5% of our total purchases for the three months ended March 31, 2020. We expect to maintain our existing relationships with these vendors.