CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2016	Jan. 02, 2016
Current assets:
Cash and cash equivalents	$ 27,043	$ 13,746
Short-term investments	17,602	23,208
Trade and other accounts receivable, net of allowances of $0 at both December 31, 2016 and January 2, 2016	17,447	12,310
Inventories	24,876	18,760
Prepaid expenses and other current assets	1,768	1,712
Total current assets	88,736	69,736
Property, plant and equipment, net	11,237	11,921
Long-term investments	3,593	9,673
Restricted cash	1,602	1,780
Intangible assets, net of amortization of $6,129 and $5,275 at December 31, 2016 and January 2, 2016, respectively	2,258	3,112
Other long-term assets	898	1,459
Total assets	108,324	97,681
Current liabilities:
Accounts payable	5,323	5,950
Accrued payroll and related liabilities	4,220	4,066
Other accrued liabilities	17,011	5,632
Customer advances	5,422	3,625
Total current liabilities	31,976	19,273
Other long-term liabilities	3,082	2,411
Commitments and contingencies
Stockholders' equity:
Undesignated preferred stock, $0.001 par value, 10,000 shares authorized, no shares issued and outstanding
Common stock, $0.001 par value : Authorized shares - 50,000 issued and outstanding shares - 20,939 and 20,372 at December 31, 2016 and January 2, 2016, respectively	21	20
Additional paid-in capital	171,314	166,514
Treasury stock, 4,845 shares at both December 31, 2016 and January 2, 2016	(28,489)	(28,489)
Accumulated other comprehensive income	321	412
Accumulated deficit	(69,901)	(62,460)
Total stockholders' equity	73,266	75,997
Total liabilities and stockholders' equity	$ 108,324	$ 97,681