Loans Held for Investment (Aggregate Principal Payments) (Details) - USD ($) $ in Thousands			6 Months Ended
		Jul. 01, 2015	Jun. 30, 2015
Subsequent Event [Line Items]
Due within one year			$ 9,623
Due after one year through five years			14,001
Due after five years through 10 years			6,821
Due after 10 years	[1]		15,923
Total			$ 46,368
Interest rate			0.00%
Subsequent Event [Member]
Subsequent Event [Line Items]
Due after 10 years		$ 4,000

[1] (1) Includes additional $4.0 million of principal scheduled to be capitalized on zero coupon note subsequent to June 30, 2015.