Business and Operations - Additional Information (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Dec. 31, 2013	Jan. 02, 2014	Dec. 31, 2012
Organization And Business Activities [Line Items]
Common stock, shares authorized	66,500,000		66,500,000	66,500,000	66,500,000
Common stock, shares outstanding	12,201,102		12,201,102	12,219,781	12,074,314
Common stock, par value	$ 0.001		$ 0.001	$ 0.001	$ 0.001
Loans receivable, net	$ 1,407		$ 1,407		$ 24,372
Proceeds from sale of loans held for sale, net		27,073	27,073
Gain Loss On Sale Of Mortgage Loans	5,027		5,027
Nonmarketable preferred equity security	800		800		2,740
Commercial real estate loans
Organization And Business Activities [Line Items]
Loans receivable, net	1,407		1,407		1,672
Preferred Stock
Organization And Business Activities [Line Items]
Nonmarketable preferred equity security	$ 800		$ 800		$ 800
Industrial Supply | North America
Organization And Business Activities [Line Items]
Number of warehouse operating locations	9		9