Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Income Tax Contingency [Line Items]
Proceeds and Excess Tax Benefit from Share-based Compensation	$ 0	$ 1,000
Unrecognized Tax Benefits	0
Deferred Tax Assets Reversed	2,000	28,000
Accrued Interest Or Penalties	0	0
State and Local Jurisdiction [Member]
Income Tax Contingency [Line Items]
Operating Loss Carryforwards	$ 25,000,000
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2018
Minimum [Member]
Income Tax Contingency [Line Items]
Open tax years	2011
Maximum [Member]
Income Tax Contingency [Line Items]
Open tax years	2013