Discontinued Operations - Schedule of reconciliation of discontinued operations presented in condensed consolidated balance sheets (Details 1) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Current assets:
Accounts receivable, net	$ 1,677	$ 6,223
Costs in excess of billings on uncompleted contracts	1,378	1,841
Inventory, net	89	242
Deferred costs on uncompleted contracts		42
Other current assets	94	79
Total major classes of current assets of the discontinued operations	3,238	8,427
Noncurrent assets:
Property and equipment, net		45
Other noncurrent assets	922	1,037
Total noncurrent assets of discontinued operations	922	1,082
Total assets of the discontinued operations in the balance sheet	4,160	9,509
Current liabilities:
Accounts payable	1,994	4,977
Accrued liabilities	$ 2,492	2,608
Billings in excess of costs on uncompleted contracts		373
Deferred revenue and other current liabilities	$ 38	26
Total current liabilities of discontinued operations	4,524	7,984
Noncurrent liabilities:
Other liabilities	225	327
Total major classes of noncurrent liabilities of the discontinued operations	225	327
Total liabilities of the discontinued operations in the balance sheet	$ 4,749	$ 8,311