2. REVENUES: ADOPTION OF ASC 606, “REVENUE FROM CONTRACTS WITH CUSTOMERS” (Details - Contract balances) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Billings In Excess Of Costs And Estimated Earnings On Uncompleted Contracts And Deferred Revenues
Costs incurred on uncompleted contracts	$ 9,697	$ 9,564
Estimated earnings on uncompleted contracts	10,787	10,741
Gross costs and estimated earnings	20,484	20,305
Less: Billings to date on uncompleted contracts	(19,526)	(19,992)
Costs incurred plus estimated earning less billings on uncompleted contracts, net	958	313
Included in the accompanying condensed consolidated balance sheets under the following captions:
Contract Assets	1,931	925
Contract Liabilities	(973)	(612)
Costs incurred plus estimated earning less billings on uncompleted contracts	$ 958	$ 313