2. Revenue

We account for revenue in accordance with ASC Topic 606: Revenue from Contracts with Customers.

Disaggregation of revenue

The following table disaggregates our revenue by market-type, as we believe it best depicts how the nature, amount, timing and uncertainty of our revenue and cash flows are affected by economic factors. Sales and usage-based taxes are excluded from revenues.

	Three Months Ended						Three Months Ended
	March 31, 2020						March 31, 2019
	(In thousands)
	United States		International		Total		United States		International		Total
Food service technology	$	1,239	$	132	$	1,371	$	1,117	$	96	$	1,213
POS automation and banking		1,554		4		1,558		1,259		18		1,277
Casino and gaming		2,558		2,373		4,931		3,424		2,059		5,483
Lottery		–		–		–		697		–		697
Printrex		61		56		117		297		45		342
Transact Services Group		2,003		267		2,270		2,213		325		2,538
Total net sales	$	7,415	$	2,832	$	10,247	$	9,007	$	2,543	$	11,550

Contract balances

Our contract liabilities consist of customer pre-payments and deferred revenue. Customer prepayments are reported as “Accrued Liabilities” in current liabilities in the Condensed Consolidated Balance Sheets and represent customer payments made in advance of performance obligations in instances where credit has not been extended and are recognized as revenue when the performance obligation is complete. Deferred revenue is reported separately in current liabilities and non-current liabilities and consists of our extended warranty contracts, technical support for our food service technology terminals, EPICENTRAL™ maintenance contracts and testing service contracts and prepaid software subscriptions for our BOHA! software applications, and is recognized as revenue as (or when) we perform under the contract. We do not have any contract asset balances as of March 31, 2020 or December 31, 2019. For the first three months of 2020, we recognized revenue of $406 thousand related to our contract liabilities at December 31, 2019. Total contract liabilities consist of the following:

	March 31, 2020		December 31, 2019
	(In thousands)

Customer pre-payments	$	82	$	232
Deferred revenue, current		643		700
Deferred revenue, non-current		183		219
Total contract liabilities	$	908	$	1,151

Remaining performance obligations

Remaining performance obligations represent the transaction price of firm orders for which a good or service has not been delivered to our customer. As of March 31, 2020, the aggregate amount of transaction prices allocated to remaining performance obligations was $4.4 million. The Company expects to recognize revenue on $4.2 million of its remaining performance obligations within the next 12 months, $0.1 million within the next 24 months and the balance of these remaining performance obligations within the next 36 months.