Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Fair Value Measurements Recurring - USD ($) $ in Thousands	Jul. 02, 2017	Jan. 01, 2017
Level 1
Schedule of Assets Measured at Fair Value on a Recurring Basis
Cash and cash equivalents (as held in the Trust as defined below)	$ 73	$ 45
Assets held in trust	2,509	2,428
Level 1 | Corporate Bonds (as Held in the Trust)
Schedule of Assets Measured at Fair Value on a Recurring Basis
Assets held in trust	1,936	1,683
Level 1 | U.S. Government Obligations (as Held in the Trust)
Schedule of Assets Measured at Fair Value on a Recurring Basis
Assets held in trust	500	700
Level 2
Schedule of Assets Measured at Fair Value on a Recurring Basis
Assets held in trust	2,032	2,017
Cash surrender value - life insurance	$ 2,032	$ 2,017