Business Combination - Additional Information (Details) - Trade Extensions - USD ($) $ in Thousands		9 Months Ended
	May 03, 2017	Oct. 31, 2017
Acquired Finite Lived Intangible Assets [Line Items]
Business acquisition, effective date of acquisition	May 03, 2017
Business acquisition consideration paid in cash	$ 40,900
Amount held in escrow deposit	$ 7,200
Escrow deposit held in period	18 months
Stock issued during period, value acquisitions	$ 4,100
Number of common stock issued under purchase consideration	148,476
Acquisition related costs		$ 526,000
Other assets
Acquired Finite Lived Intangible Assets [Line Items]
Business combination, indemnification assets	$ 1,400