Long-Term Debt - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Debt instrument interest rate	4.75%
Loan outstanding maturity date	2027-02
Loan unpaid principal balance	$ 1,668,000
Interest expenses on loans	100,000	100,000	100,000
Loan One
Debt Instrument [Line Items]
Loan unpaid principal balance	1,100,000
Loan Two
Debt Instrument [Line Items]
Loan unpaid principal balance	$ 600,000