4. BILLINGS, COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Billings In Excess Of Costs And Estimated Earnings On Uncompleted Contracts And Deferred Revenues
Costs incurred on uncompleted contracts	$ 5,823	$ 14,496
Estimated earnings on uncompleted contracts	3,175	5,539
Gross costs and estimated earnings	8,998	20,035
Less: Billings to date on uncompleted contracts	(3,670)	(14,389)
Costs incurred plus estimated earning less billings on uncompleted contracts	5,328	5,646
Included in the accompanying condensed consolidated balance sheets under the following captions:
Costs and estimated earnings in excess of billings on uncompleted contracts	5,398	5,847
Billings in excess of costs and estimated earnings on uncompleted contracts	(70)	(201)
Total costs and estimated earnings and billings in excess of cost on uncompleted contracts	$ 5,328	$ 5,646