Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Stock Options, Stock Purchase Plan and Warrants - Summary of Warrant Activity (Detail)

v3.3.1.900
Stock Options, Stock Purchase Plan and Warrants - Summary of Warrant Activity (Detail) - Warrant [Member] - $ / shares
12 Months Ended
Mar. 16, 2014
Mar. 12, 2014
Feb. 07, 2014
Jan. 09, 2012
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]              
Warrants outstanding, beginning balance         650,000 1,358,333 1,358,333
Warrants, Granted       200,000 0 0 0
Warrants, Exercised   (375,000) (83,333)   0 (458,333) 0
Warrants, Expired (250,000)       0 (250,000) 0
Warrants, Cancelled         0 0 0
Warrants outstanding, ending balance         650,000 650,000 1,358,333
Warrants exercisable, ending balance         530,000    
Weighted Average Exercise Price Warrants outstanding, beginning balance         $ 1.48 $ 1.24 $ 1.24
Weighted average exercise price, granted       $ 1.43 0 0 0
Weighted Average Exercised Price, Exercised         0 0 0
Weighted Average Exercised Price, Expired         $ 0 $ 0 $ 0
Weighted Average Exercised Price, Cancelled         0 0 0
Weighted Average Exercised Price, Warrants outstanding, ending balance         $ 1.48 $ 1.48 $ 1.24
Weighted Average Exercised Price, Warrants exercisable, ending balance         $ 1.49