Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Operating Loss Carryforwards [Line Items]
NOL carry forward	$ 6,414,256	$ 7,069,776
Valuation Allowance	$ 3,400,000	$ 3,400,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	35.00%
Operating Loss Carryforwards, Limitations on Use	use of the Company's net operating loss and credit carryforwards may be limited if a cumulative change in ownership of more than 50% occurs within any three-year period since the last ownership change.
Operating Loss Carryforwards, Limitation Rate on Taxable Income	80.00%
Increase Decrease in Deferred Tax Assets Due To Change in Enacted Tax Rate		$ 6,600,000
Increase Decrease in Deferred Tax Liabilities Due To Change in Enacted Tax Rate		16,300,000
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount		9,700,000
Non Cash Reclassification Of Deferred Tax Liabilities	$ 900,000
California [Member]
Operating Loss Carryforwards [Line Items]
NOL carry forward	22,900,000	$ 23,100,000
Fedaral [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 2,500,000
Scenario, Plan [Member]
Operating Loss Carryforwards [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%
Minimum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss CarryForwards Expiration Period	2026
Maximum [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss CarryForwards Expiration Period	2037