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The Company and Summary of Significant Accounting Policies - Summary of Computation of Basic and Diluted Net Income (Loss) Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net income (loss)	$ 348	$ (4,405)
Shares used in computing net income (loss) per share
Basic	8,130	6,647
Total shares: basic	8,130	6,647
Total shares: diluted	8,347	6,647
Net income per share:
Basic	$ 0.04	$ (0.66)
Diluted	$ 0.04	$ (0.66)
Stock Option [Member]
Shares used in computing net income (loss) per share
Add: weighted-average stock options outstanding	63
Unvested Restricted Stock Units [Member]
Shares used in computing net income (loss) per share
Add: weighted-average stock options outstanding	154

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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