Discontinued Operations Results of Discontinued Operations on the Balance Sheet (Details) - Federal Business - Discontinued Operations, Held-for-sale $ in Thousands	Mar. 31, 2018 USD ($)
Assets
Accounts receivable, net	$ 15,360
Inventories, net	885
Costs/estimated earnings in excess of billings on uncompleted contracts	29,662
Other current assets	1,073
Current assets held for sale	46,980
Property, plant and equipment, net	1,087
Intangibles, net	11,035
Other non-current assets	156
Non-current assets held for sale	12,278
Liabilities
Accounts payable	15,541
Accrued compensation and benefits	1,436
Deferred revenue	293
Billings in excess of costs/estimated earnings on uncompleted contracts	2,120
Other current liabilities	1,207
Current liabilities held for sale	20,597
Other liabilities	597
Non-current liabilities held for sale	$ 597