Sale of MRI Assets - Additional Information (Detail) - USD ($) |
9 Months Ended | ||
---|---|---|---|
Jan. 30, 2017 |
Sep. 30, 2017 |
Dec. 31, 2016 |
|
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
Allocation of goodwill to asset held for sale | $ 394,000 | ||
VersaVue Software and DynaCAD Product and Related Assets [Member] | Asset Purchase Agreement [Member] | |||
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||
Sale and transfer of intangible assets | $ 3,200,000 | ||
Holdback reserve related to sale and transfer of intangible assets | $ 350,000 | $ 350,000 | |
Proceeds from sale and transfer of intangible assets | 2,900,000 | ||
Allocation of goodwill to asset held for sale | 394,000 | ||
Gain on sale and transfer of intangible assets | $ 2,500,000 | $ 2,508,000 |