Liabilities Subordinated to Claims of General Creditors (Tables)

12 Months Ended

Dec. 31, 2012

Liabilities Subordinated to Claims of General Creditors [Abstract]

Partnership's liabilities subordinated to claims of general creditors

	2012		2011
Capital notes 7.33%, due in annual installments of $50,000 commencing on June 12, 2010 with a final installment on June 12, 2014	$	100,000	$	150,000
	$	100,000	$	150,000

Required annual principal payments

2013	$	50,000
2014		50,000
2015		—
2016		—
2017		—
Thereafter		—
	$	100,000