Impairment of Long-Lived Assets - Additional Information (Detail)		3 Months Ended
Mar. 28, 2016 USD ($)	Mar. 31, 2016 USD ($) Property	Mar. 31, 2015 USD ($) Property
Property Plant And Equipment [Abstract]
Impairment Charges		$ 209,908	$ 510,041
Number of income properties held for sales \| Property		1	2
Gain Recognized in 2015	$ 11,400,000	$ 134,000	$ 277,000
Estimated closing costs		$ 76,000	$ 233,000

The difference between the carrying value and the sale price of real estate or properties that were intended to be sold or held for capital appreciation or rental income. This element refers to the gain (loss) included in earnings and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Name:	us-gaap_GainLossOnSaleOfProperties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration