Acquisition of Akers AB - Additional Information (Detail) $ in Thousands	Mar. 03, 2016 USD ($) Office shares
Akers AB [Member]
Business Acquisition [Line Items]
Business acquisition, equity interest acquired	60.00%
Total base purchase price	$ 77,246
Purchase price in the form of cash	29,399
Purchase price in the form of three-year note	$ 25,710
Purchase price in the form of shares | shares	1,776,604
Business acquisition, fair value	$ 22,137
Debt, interest rate	6.50%
Debt, maturity date	Mar. 03, 2019
Business acquisition, net sales	$ 12,583
Acquisition-related transaction costs	1,800
Business acquisition, loss before income taxes	1,006
Intangible assets acquired	15,972
Loans payable with accrued interest	$ 7,468
Akers AB [Member] | Developed Technology [Member]
Business Acquisition [Line Items]
Acquired intangible assets, economic lives	5 years
Intangible assets acquired	$ 6,400
Akers AB [Member] | Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired intangible assets, economic lives	10 years
Intangible assets acquired	$ 6,016
Akers AB [Member] | Trade Name [Member]
Business Acquisition [Line Items]
Intangible assets acquired	$ 3,556
U.S. [Member]
Business Acquisition [Line Items]
Number of sales offices | Office	14