Equity Incentive Plan - Additional Information (Detail) (USD $)
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1 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | 3 Months Ended | 6 Months Ended | ||||
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Jun. 18, 2013
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
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Jun. 30, 2012
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Jun. 30, 2013
Stock Awards
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Jun. 30, 2013
Stock Awards
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Jun. 30, 2013
Stock Awards
Minimum
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Jun. 30, 2013
Stock Awards
Minimum
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Jun. 30, 2013
Stock Awards
Maximum
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Jun. 30, 2013
Stock Awards
Maximum
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Jun. 30, 2013
Restricted Stock Units (RSUs)
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Mar. 31, 2013
Restricted Stock Units (RSUs)
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Jun. 30, 2013
Stock Options and Restricted Stock
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Jun. 30, 2013
Stock Options and Restricted Stock
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Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||||||||||||
Share based compensation expense | $ 365,367 | $ 312,563 | $ 788,326 | $ 633,073 | |||||||||||
Increase in shares reserved for grant under stock option and incentive plan | 650,000 | ||||||||||||||
Shares reserved for grant under stock option and incentive plan | 3,800,000 | ||||||||||||||
Stock options granted to employees | 20,000 | 374,500 | |||||||||||||
Restricted stock units granted to Board of Directors | 0 | 13,800 | |||||||||||||
Stock option and incentive plan, vesting period | 1 year | 1 year | 4 years | 4 years | 4 years | 4 years | |||||||||
Unrecognized stock-based compensation cost | 3,000,000 | 3,000,000 | |||||||||||||
Unrecognized stock-based compensation cost, weighted-average recognition period | 2 years 10 months 24 days | ||||||||||||||
Intrinsic value of stock options and SARs | 599,010 | 1,241,759 | |||||||||||||
Cash received from exercise of stock options | 30,859 | 32,377 | 1,127,875 | 147,033 | |||||||||||
Options and SARs outstanding | 1,900,000 | 1,900,000 | |||||||||||||
Weighted average exercise price per share | $ 8.60 | $ 8.60 | |||||||||||||
Intrinsic value of Options and SARs | $ 16,200,000 | $ 16,200,000 | |||||||||||||
Weighted average remaining contractual term | 6 years 3 months 7 days | 6 years 3 months 7 days | |||||||||||||
Stock based awards, contractual term | 10 years | 10 years |