Discontinued Operations (Assets and Liabilities of Discontinued Operations) (Detail) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Assets of Discontinued Operations:
Receivables, net of allowance for bad debt	$ 1	$ 6
Prepaid expenses	0	8
Assets	1	14
Liabilities of Discontinued Operations:
Accounts payable	0	67
Other accrued expenses	157	5,228
Liabilities	$ 157	$ 5,295