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Unaudited Supplemental Pro Forma Information (Detail) - Spectrum Inc and TangenX Technology Corporation $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2017 USD ($) $ / shares
Business Acquisition [Line Items]
Total revenue | $	$ 162,913
Net income (loss) | $	$ 17,220
Basic | $ / shares	$ 0.41
Diluted | $ / shares	$ 0.40

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The pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

+ References

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-Publisher FASB
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The pro forma diluted net income per share for a period as if the business combination or combinations had been completed at the beginning of a period.

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The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

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