Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 30, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jan. 02, 2016 USD ($)
Operating activities
Net income (loss)	$ 24,015	$ (603)	$ (2,424)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities:
Depreciation and amortization expense	6,397	7,510	7,510
Amortization of intangible assets	319	482	464
Deferred income taxes	(21,476)	(838)	(906)
Share-based compensation expense	2,842	3,131	2,419
Stock awards issued for non-employee director service	9	9	2
Impairment loss on intangible assets	0	1,130	0
Amortization of deferred financing costs	32	70	82
Gain from disposition of assets	(8)	0	(13)
Changes in operating assets and liabilities:
Accounts receivable	796	(30)	568
Inventory	(3,327)	312	(2,854)
Other current assets	(292)	(255)	262
Other non-current assets	40	203	225
Accounts payable and accrued expenses	2,725	7,906	119
Other current liabilities	(712)	1,775	475
Other non-current liabilities	274	769	(184)
Net cash provided by operating activities	11,634	21,571	5,745
Investing activities
Additions to property and equipment	(4,896)	(6,353)	(7,780)
Proceeds from sale of property and equipment	39	0	13
Cash paid for intangibles	0	(125)	(25)
Proceeds from sale of marketable securities and investments	0	1	0
Net cash used in investing activities	(4,857)	(6,477)	(7,792)
Financing activities
Proceeds from revolving loan payable	3,835	13,727	15,637
Payments made on revolving loan payable	(3,835)	(25,485)	(14,900)
Minority shareholder redemption	(2,486)	0	0
Payments on capital leases	(561)	(587)	(438)
Treasury stock purchases	(5,823)	(1,387)	0
Statutory tax withholding payment for share-based compensation	(1,644)	(969)	(438)
Proceeds from exercise of stock options	258	908	134
Payment of liabilities related to financing activities	(100)	(100)	(100)
Preferred stock dividends paid	(209)	(61)	0
Net cash (used in) provided by financing activities	(10,565)	(13,954)	(105)
Effect of exchange rate changes on cash	(5)	(34)	36
Net change in cash and cash equivalents	(3,793)	1,106	(2,116)
Cash and cash equivalents, beginning of period	6,643	5,537	7,653
Cash and cash equivalents, end of period	2,850	6,643	5,537
Supplemental disclosure of non-cash investing and financing activities:
Accrued asset purchases	831	744	708
Accrued intangible asset purchases	0	0	125
Property acquired under capital lease	0	211	1,588
Preferred stock dividends declared and not paid	0	60	0
Unrealized loss on investments	0	(2)	0
Supplemental disclosure of cash flow information:
Cash paid during the period for income taxes	78	89	104
Cash paid during the period for interest	$ 1,536	$ 1,077	$ 1,145