Reconciliation of Shares Used to Determine Net Income per Share (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Earnings Per Share Disclosure [Line Items]
Net loss	$ (720)us-gaap_NetIncomeLoss	$ (5,842)us-gaap_NetIncomeLoss
Weighted average number of shares - basic	29,122,746	24,826,101
Weighted average number of shares outstanding - diluted	29,122,746	24,826,101
Warrants
Earnings Per Share Disclosure [Line Items]
Shares underlying	0	0
Options
Earnings Per Share Disclosure [Line Items]
Shares underlying	0	0

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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