Discontinued Operations - Schedule of Discontinued Operations within Statement of Operations (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)
Discontinued Operations And Disposal Groups [Abstract]
Revenues	$ 2,009
Cost of revenues	2,148
Gross profit	(139)
Operating expenses:
Sales and marketing	154
General and administrative	13
Restructuring expenses	8
Total operating expenses	175
Operating loss	(314)
Benefit for income taxes	(100)
Net loss	$ (214)