Income Taxes - Additional Information (Detail) - USD ($)		12 Months Ended
	Jan. 02, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Taxes [Line Items]
Federal corporate income tax rate		21.00%
Cash tax payments for transition tax		$ 0
Tax Cuts and Jobs Act of 2017, Incomplete Accounting, Change in tax rate deferred tax liability, income tax benefit			$ 1,693,000
Change in total valuation allowance		6,124,000	6,458,000	$ 12,350,000
Interest and penalties related to uncertain tax positions		0	0	$ 43,000
Unrecognized tax benefits recorded as reduction to operating loss tax carryforwards		1,121,000
Unrecognized tax benefits, if recognized that would not affect the effective tax rate		775,000
Unrecognized tax benefits remaining balance, if recognized would affect the effect tax rate		427,000
Foreign Subsidiaries [Member]
Income Taxes [Line Items]
Earnings related to deferred income tax		21,603,000
Federal [Member]
Income Taxes [Line Items]
Net operating loss carryforwards		$ 108,746,000	76,062,000
Net operating loss carryforwards expiration date		2037
Federal [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Income tax examinations, year		2015
State [Member]
Income Taxes [Line Items]
Net operating loss carryforwards		$ 232,256,000	159,554,000
Net operating loss carryforwards expiration date		2038
State [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Income tax examinations, year		2014
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Net operating loss carryforwards		$ 15,989,000	$ 14,832,000
Net operating loss carryforwards expiration date		2038
Foreign Tax Authority [Member] | Earliest Tax Year [Member]
Income Taxes [Line Items]
Income tax examinations, year		2013
ASU 2016-09 [Member]
Income Taxes [Line Items]
Gross amount of windfall deductions previously not recognized	$ 6,529,000
Acquired Goodwill [Member]
Income Taxes [Line Items]
Useful life (years)		15 years
Maximum [Member]
Income Taxes [Line Items]
Federal corporate income tax rate			35.00%