Income Taxes - Additional Information (Details) - USD ($)		12 Months Ended
	Jan. 01, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
Federal NOL carry-forwards		$ 200,000	$ 400,000
Increase (decrease) in valuation allowance		1,700,000	(25,500,000)
Valuation allowance		64,425,000	$ 62,688,000
Federal NOL carry-forwards		117,800,000
State NOL carry-forwards		116,900,000
Foreign NOL carryforwards		$ 26,300,000
U.S. federal income tax rate		21.00%	35.00%
Impact of intercompany debt charge off on annual effective income tax rate		(135.40%)
Corporate income tax rate		(4.10%)	(28.70%)
Provisional net tax benefit recognized associated with enactment of Tax Legislation		$ 34,700,000
Impact on annual effective income tax rate			688.40%
Tax Cuts And Jobs Act incomplete acccounting description		we have not completed our accounting for the tax effects of enactment of the Act; however, we have made reasonable estimate of the effects on our existing deferred tax balances.
Provisional amounts for other provisions of Tax Legislation, including one-time transition tax		$ 0
Interest or penalties as result of tax uncertainties		0	$ 0
Unrecognized tax benefits as a result of tax positions taken		$ 0	0
Ownership Changes in 2013 and 2017 | NOL Carry-forwards
Operating Loss Carryforwards [Line Items]
Reduction in NOL carry-forwards available against corresponding valuation allowance			32,800,000
Federal
Operating Loss Carryforwards [Line Items]
Open tax year		2014 2015 2016 2017
Federal | Latest Tax Year
Operating Loss Carryforwards [Line Items]
NOL carryforwards expiration		2037
Federal | Earliest Tax Year
Operating Loss Carryforwards [Line Items]
NOL carryforwards expiration		2019
State and Local
Operating Loss Carryforwards [Line Items]
Open tax year		2014 2015 2016 2017
State and Local | Latest Tax Year
Operating Loss Carryforwards [Line Items]
NOL carryforwards expiration		2037
State and Local | Earliest Tax Year
Operating Loss Carryforwards [Line Items]
NOL carryforwards expiration		2019
Foreign Tax Authority | Latest Tax Year
Operating Loss Carryforwards [Line Items]
NOL carryforwards expiration		2024
Foreign Tax Authority | Earliest Tax Year
Operating Loss Carryforwards [Line Items]
NOL carryforwards expiration		2019
Puerto Rico Tax Authorities
Operating Loss Carryforwards [Line Items]
Open tax year		2012 2013 2014 2015 2016 2017
Puerto Rico
Operating Loss Carryforwards [Line Items]
Federal NOL carry-forwards		$ 2,300,000	$ 5,100,000
Valuation allowance		$ 22,700,000
Corporate income tax rate		39.00%
Puerto Rico | Subsequent Event
Operating Loss Carryforwards [Line Items]
Corporate income tax rate	37.50%
UNITED STATES
Operating Loss Carryforwards [Line Items]
Valuation allowance		$ 41,700,000