Goodwill - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2016
Goodwill [Line Items]
Goodwill impairment		$ 0
Increase in Deferred Tax Asset and Decrease in Goodwill Due to Incorrect Purchase Price Allocation
Goodwill [Line Items]
Correction of prior year error in current year	$ 9,500,000