Discontinued Operations (Assets and Liabilities of Discontinued Operations) (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets of Discontinued Operations:
Receivables, net of allowance for bad debt	$ 5	$ 6
Prepaid expenses	0	8
Assets	5	14
Liabilities of Discontinued Operations:
Accounts payable	0	67
Other accrued expenses	1,163	5,228
Liabilities	$ 1,163	$ 5,295