CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]
Balance at Dec. 30, 2011	$ 29,458us-gaap_StockholdersEquity	$ 361	$ 157,382	$ 2,405	$ (130,690)
Balance (in shares) at Dec. 30, 2011		36,041
Net loss	(1,763)us-gaap_NetIncomeLoss	0	0	0	(1,763)
Other comprehensive loss	(825)	0	0	(825)	0
Common stock issued upon exercise of options	1,514	3	1,511	0	0
Common stock issued upon exercise of options (in shares)		324
Stock-based compensation	3,358	0	3,358	0	0
Stock-based compensation (in shares)		0
Vested restricted stock	0staa_VestedRestrictedStockGrants	0	0	0	0
Vested restricted stock (in shares)		58
Balance at Dec. 28, 2012	31,742us-gaap_StockholdersEquity	364	162,251	1,580	(132,453)
Balance (in shares) at Dec. 28, 2012		36,423
Net loss	398us-gaap_NetIncomeLoss	0	0	0	398
Other comprehensive loss	(1,298)	0	0	(1,298)	0
Common stock issued upon exercise of options	3,286	7	3,279	0	0
Common stock issued upon exercise of options (in shares)		645
Common stock issued upon cashless exercise of options	0	5	(5)	0	0
Common stock issued upon cashless exercise of options (in shares)		485
Stock-based compensation	4,721	0	4,721	0	0
Stock-based compensation (in shares)		0
Unvested restricted stock	3staa_UnvestedRestrictedStock	3	0	0	0
Unvested restricted stock (in shares)		341
Vested restricted stock	0staa_VestedRestrictedStockGrants	0	0	0	0
Vested restricted stock (in shares)		17
Balance at Jan. 03, 2014	38,852us-gaap_StockholdersEquity	379	170,246	282	(132,055)
Balance (in shares) at Jan. 03, 2014		37,911
Net loss	(8,392)us-gaap_NetIncomeLoss	0	0	0	(8,392)
Other comprehensive loss	(1,352)	0	0	(1,352)	0
Common stock issued upon exercise of options	3,022	4	3,018	0	0
Common stock issued upon exercise of options (in shares)	584	457
Common stock issued upon cashless exercise of options	0	1	(1)	0	0
Common stock issued upon cashless exercise of options (in shares)		127
Stock-based compensation	4,969	0	4,969	0	0
Stock-based compensation (in shares)		0
Unvested restricted stock	(3)staa_UnvestedRestrictedStock	(3)	0	0	0
Unvested restricted stock (in shares)		(341)
Vested restricted stock	3staa_VestedRestrictedStockGrants	3	0	0	0
Vested restricted stock (in shares)		275
Balance at Jan. 02, 2015	$ 37,099us-gaap_StockholdersEquity	$ 384	$ 178,232	$ (1,070)	$ (140,447)
Balance (in shares) at Jan. 02, 2015		38,429

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Value of stock issued as a result of the exercise of stock warrants.

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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