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Share Based Payments - Schedule of Stock Options Activity (Detail)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2015
USD ($)
$ / shares
shares
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Number of options, Additions as a result of the reverse acquisition | shares 407,000
Number of options, Granted | shares 85,000
Number of options, Forfeited | shares (30,000)
Number of options, Ending Balance | shares 462,000
Number of options, Options Exercisable | shares 365,334
Weighted average exercise price per share, Additions as a result of the reverse acquisition | $ / shares $ 9.21
Weighted average exercise price per share, Granted | $ / shares 10.39
Weighted average exercise price per share, Forfeited | $ / shares 7.85
Weighted average exercise price per share, Ending Balance | $ / shares 9.52
Options exercisable as of December 31, 2015 | $ / shares $ 9.35
Weighted average remaining contractual term 5 years 3 months 18 days
Weighted average remaining contractual term 4 years 7 months 6 days
Aggregate intrinsic value, Beginning Balance | $ $ 0 [1]
Aggregate intrinsic value, Ending Balance | $ $ 0 [1]
[1] The aggregate intrinsic value amounts in the table above represent the difference between the closing price of IDI's common share on December 31, 2015 of $7.34 and the exercise price, multiplied by the number of stock options as of the same date.