Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Income Taxes [Line Items]
Change in total valuation allowance	$ 12,350,000	$ 7,287,000	$ 1,754,000
Tax benefits associated with the exercise of SARs and stock options and the vesting of RSUs	6,409,000	5,943,000
Interest and penalties related to uncertain tax positions	$ 43,000	0	$ 0
Income tax examinations, year	2013
Unrecognized tax benefits	$ 775,000
Unrecognized tax benefits remaining balance, if recognized would affect the effect tax rate	81,000
Foreign Subsidiaries [Member]
Income Taxes [Line Items]
Earnings related to deferred income tax	13,045,000
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 34,380,000	18,427,000
Net operating loss carryforwards expiration date	2036
State [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 40,263,000	11,732,000
Net operating loss carryforwards expiration date	2036
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Net operating loss carryforwards	$ 6,947,000	$ 5,932,000
Net operating loss carryforwards expiration date	2036
Acquired Goodwill [Member]
Income Taxes [Line Items]
Useful life (years)	15 years