Reconciliation of Statutory Federal Income Tax Rate to Actual Effective Tax Rate (Detail)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Federal income tax rate to the actual effective income tax rate for continuing operations
Federal tax (benefit) rate	(34.00%)	(34.00%)
Increase (decrease) in taxes resulting from:
State income taxes	(4.10%)	(5.80%)
Change in valuation allowance	37.80%	39.60%
Permanent differences	2.10%	0.20%
Minimum tax	1.50%	0.10%
Effective income tax rate, continuing operations	3.30%	0.10%