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Shareholders' Equity - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			12 Months Ended
	Jul. 13, 2017	Jul. 07, 2017	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Jul. 10, 2017
Equity, Class of Treasury Stock [Line Items]
Share issued price per share		$ 3.50				$ 3.18
Proceeds from new shares issued			$ 168		$ 6,000
Shares purchased to satisfy employee tax obligation			2,574	2,574
Average share price for additional shares purchased			$ 5.05	$ 8.01
Private Placement [Member]
Equity, Class of Treasury Stock [Line Items]
New shares issued, shares	1,700,000
Proceeds from new shares issued	$ 6,000
Private Placement [Member] | Ashok Trivedi [Member]
Equity, Class of Treasury Stock [Line Items]
Proceeds from new shares issued		$ 3,000
Private Placement [Member] | Sunil Wadhwani [Member]
Equity, Class of Treasury Stock [Line Items]
Proceeds from new shares issued		$ 3,000

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