Loan Transactions and Related Notes Receivable - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended				1 Months Ended
	Dec. 12, 2012 First Credit Agreement	Jan. 15, 2009 First Credit Agreement	Dec. 12, 2012 Third Credit Agreement	Dec. 22, 2009 Third Credit Agreement	Dec. 12, 2012 Third Credit Agreement Amendment Principal Repayment One	Dec. 12, 2012 Third Credit Agreement Amendment Principal Repayment Two	Dec. 12, 2012 Third Credit Agreement Amendment Principal Repayment Three	Jan. 30, 2009 Second Credit Agreement
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan amount		$ 10,000		$ 10,000				$ 10,000
Notes receivable, maturity		Jan. 15, 2014	Aug. 30, 2015
Note receivable interest rate		12.00%	12.00%
Remaining Principal Payment Amount on Note Receivable		4,000
Early Repayment of Note Receivable	6,000
Notes receivable semi-annual installment, first payment					1,100
Notes receivable semi-annual installment, first payment date					Dec. 31, 2013	Dec. 22, 2014	Aug. 30, 2015
Notes receivable semi-annual installment, second payment						1,400
Notes receivable semi-annual installment, third payment							$ 6,000