Cash and Cash Equivalents - Additional Information (Detail) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Cash equivalents held at financial institution	$ 1,811	$ 24
Cash and cash equivalents held at two financial institutions	71,564	60,779
International Business Segment [Member]
Liquid assets	$ 12,255	$ 11,005

Amount of net assets (liabilities).

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