The Company and Significant Accounting Policies - Summary of Nonvested Restricted Stock Units Granted (Detail) - 6 months ended Jun. 30, 2015 - $ / shares shares in Thousands	Total
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Number of Restricted stock units, Granted	62
Weighted-Average Fair Value of Restricted stock units, Granted	$ 6.76

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Namespace Prefix:	us-gaap_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration