Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		3 Months Ended
		Aug. 26, 2018	Aug. 27, 2017
Cash flows from operating activities:
Consolidated net income		$ 190	$ 2,212
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		3,145	2,954
Stock-based compensation expense		728	950
Deferred taxes		(63)	1,150
Change in investment in non-public company, fair value		(1,000)	(900)
Net gain on disposal of property and equipment		(3)	(2)
Changes in current assets and current liabilities:
Accounts receivable, net		5,735	(768)
Inventories		1,833	(2,849)
Prepaid expenses and other current assets		(363)	(841)
Accounts payable		(2,544)	4,664
Accrued compensation		(5,269)	(2,825)
Other accrued liabilities		386	(269)
Deferred revenue		(589)	(26)
Net cash provided by operating activities		2,186	3,450
Cash flows from investing activities:
Purchases of property and equipment		(14,440)	(5,727)
Issuance of note receivable			(1,185)
Proceeds from sales of fixed assets		3	43
Net cash used in investing activities		(14,437)	(6,869)
Cash flows from financing activities:
Proceeds from sale of common stock			1
Taxes paid by Company for employee stock plans		(10)	(43)
Payments on long-term debt		(1,271)	(1,271)
Proceeds from lines of credit		12,000	10,500
Payments on lines of credit			(3,000)
Other, net			14
Net cash provided by financing activities		10,719	6,201
Net (decrease) increase in cash, cash equivalents and restricted cash (1)	[1]	(1,532)	2,782
Cash, cash equivalents and restricted cash, beginning of period (1)	[1]	3,216	5,734
Cash, cash equivalents and restricted cash, end of period (1)	[1]	1,684	8,516
Supplemental disclosure of non-cash investing and financing activities:
Purchases of property and equipment on trade vendor credit		$ 3,118	$ 799

[1] As a result of adopting ASU 2016-18, the Company now is required to include restricted cash as part of the change in the total cash balance. Accordingly, cash and cash equivalents at the beginning-of-period and end-of-period total amounts have been adjusted to include $325,000 of restricted cash for each of the periods presented. Refer to Note 1, "Recently Adopted Accounting Pronouncements," in the Notes to Condensed Consolidated Financial Statements for more information.