Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes [Line Items]
Valuation allowance	$ 1,158,000	$ 1,058,000
Increase in valuation allowance	100,000	231,000	149,000
Income tax refund	2,300,000
Unrecognized tax expenses	657,000	642,000	628,000
Unrecognized tax benefits that impact the effective tax rate, if recognized	500,000
Income tax reserve arising from difference in rates applicable to corporations				400,000
Interest and penalties in income tax expense	15,000
State income tax liability	3,000
NOL carryforwards expiration year	2018
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
NOL carryforwards	25,900,000
State and Local Jurisdiction [Member] | Minimum [Member]
Income Taxes [Line Items]
Period subject to examination	2008
State and Local Jurisdiction [Member] | Maximum [Member]
Income Taxes [Line Items]
Period subject to examination	2010
Foreign Country [Member]
Income Taxes [Line Items]
NOL carryforwards	$ 900,000
Federal [Member]
Income Taxes [Line Items]
NOL carryforwards expiration year	2034
Federal [Member] | Minimum [Member]
Income Taxes [Line Items]
Income tax returns year under examination	2009
Federal [Member] | Maximum [Member]
Income Taxes [Line Items]
Income tax returns year under examination	2010
Federal and State Taxing Authorities [Member] | Minimum [Member]
Income Taxes [Line Items]
Period subject to examination	2010
Federal and State Taxing Authorities [Member] | Maximum [Member]
Income Taxes [Line Items]
Period subject to examination	2013