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Share Based Compensation Plan - Additional Information (Detail) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2019 USD ($) $ / shares shares	Dec. 31, 2018 USD ($) $ / shares	Dec. 31, 2017 USD ($) $ / shares
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share based compensation expense	$ 4,714		$ 1,454	$ 1,519
Unrecognized share based compensation expense	$ 855	$ 855
Share based compensation cost expected period for recognition	8 years 11 months 23 days
Option granted contractual term	10 years
Stock options vesting period	3 years
Weighted average grant date fair value | (per share)	$ 9.58	$ 9.58	$ 3.22	$ 2.09
Aggregate Intrinsic value exercised	$ 1,999		$ 2,162	$ 219
Selling, General and Administrative Expenses [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Share based compensation expense	$ 4,714		$ 1,454	$ 1,519
Stock Compensation Plan [Member]
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Number of shares available for issuance | shares	2,074,000	2,074,000
Maximum percentage of outstanding shares	10.00%

X

- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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Number of shares issuance under share-based payment arrangement.

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